Publications

Books

 

Research Articles

2017

111. An FTIR emission study of the products of NO A2Σ+ (v = 0, 1) + O2 collisions J. Few, J. Fletcher, J. Redmond, G. Hancock, G.A.D. Ritchie, Phys. Chem. Chem. Phys. (2017) DOI: 10.1039/c7cp00904f. http://pubs.rsc.org/en/Content/ArticleLanding/2017/CP/C7CP00904F#!divAbstract

110. ICL based OF-CEAS: a sensitive tool for analytical chemistry. K.M. Manfred, K.E. Hunter, L. Ciaffoni, G.A.D. Ritchie, Analytical Chemistry, 89 902 (2017). http://pubs.acs.org/doi/abs/10.1021/acs.analchem.6b04030

2016

109. A portable device for measuring breath acetone based on sample preconcentration and cavity enhanced spectroscopy. T. Blaikie, J. Couper, G. Hancock, P. Hurst, R. Peverall, G. Richmond, G.A.D Ritchie, D. Taylor, K. Valentine, Analytical Chemistry, 88 11016 (2016). http://pubs.acs.org/doi/abs/10.1021/acs.analchem.6b02837

108. Detection of HO2 in an atmospheric pressure plasma jet using optical feedback cavity-enhanced absorption spectroscopy. Michele Gianella, Stephan Reuter, Ana Lawry Aguila, Grant A D Ritchie and Jean-Pierre H van Helden. New Journal of Physics 18 (2016) http://iopscience.iop.org/article/10.1088/1367-2630/18/11/113027

107. The molecular bronchoscope: a novel tool for measurement of spatially dependent CO2concentrations in the lungs. L. Ciaffoni, J.H. Couper, G. Richmond, G. Hancock, G.A.D. Ritchie,Analytical Chemistry August (2016) DOI: 10.1021/acs.analchem.6b02432 http://pubs.acs.org/doi/abs/10.1021/acs.analchem.6b02432

106. Multi-mode absorption spectroscopy using a quantum cascade laser for simultaneous detection of NO and H2O. S. O’Hagan, T. Pinto, P. Ewart, G.A.D. Ritchie, Applied Physics B 122 1(2016). https://link.springer.com/article/10.1007/s00340-016-6499-4

105. In-airway molecular flow sensing: A new technology for continuous, non-invasive monitoring of oxygen consumption in critical care. L. Ciaffoni, D.P. O’Neill, J.H. Couper, G.A.D. Ritchie, G. Hancock, P.A. Robbins, Science Advances1600560 August (2016) http://advances.sciencemag.org/content/2/8/e1600560

 104. M-line spectroscopy on mid-infrared Si photonic crystals for fluid sensing and chemical imaging. V.M. Lavichev, B. Jakoby, U. Hedenig, Th. Grille, J.M.R. Kirkbride, G.A.D. Ritchie, Optics Express 24 262 (2016). https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-1-262

2015

103. Cavity-enhanced near-infrared laser absorption spectrometer for the measurement of acetonitrile in breath. M. Gianella, G. A. D. Ritchie, Analytical Chemistry published online (2015)DOI: 10.10214/acs.analchem.5b01341

102. Optical-feedback cavity-enhanced absorption spectroscopy in a linear cavity: model and experiments. K. M. Manfred, L. Ciaffoni, G. A. D. Ritchie, Opt. Lett. Published online (2015) DOI: 10.1007/s00340-015-6140-y

101. Optical feedback cavity-enhanced absorption spectroscopy with a 3.24 μm interband cascade laser. K. M. Manfred, G. A. D. Ritchie, N. Lang, J. H. van Helden, Appl. Phys. Lett. 106, 221106 (2015) DOI: 10.1063/1.4922149

2014

100. Enhancing the sensitivity of mid-IR quantum cascade laser-based cavity-enhanced absorption spectroscopy using RF current perturbation K. M. Manfred, J. M. R. Kirkbride, L. Ciaffoni, R. Peverall, G. A. D. Ritchie, Opt. Lett. 39, 6811-6814 (2014) DOI: 10.1364/OL.39.006811

99. Comparison of breath gases, including acetone, with blood glucose and blood ketones in children and adolescents with type I diabetes T. Blaikie, J. Edge, G. Hancock, D. Lunn, C. Megson, R. Peverall, G. Richmond, G.A.D. Ritchie, D. Taylor, J. Breath Res. 8, 046010 (2014).

98. RF noise induced laser perturbation for improving the performance of non-resonant cavity enhanced absorption spectroscopy L. Ciaffoni, J. Couper, G. Hancock, R. Peverall, P. A. Robbins, G.A.D. Ritchie, Opt. Exp. 22, 17030-17039 (2014) DOI:10.1364/OE.22.017030

97. A laser based method and sample protocol for measuring breath acetone G. Hancock, C.E. Langley, R. Peverall, G.A.D. Ritchie, D. Taylor, Anal. Chem. 86, 5838 (2014).

96. Polarisation spectroscopy on a velocity selected molecular sample J.M.R. Kirkbride, A. Dalton, G.A.D. Ritchie, Opt. Lett. 39, 2645 (2014)

95. Pump and probe spectroscopy with continuous wave quantum cascade lasers J.M.R. Kirkbride, S.K. Causier, A.R. Dalton, D. Weidmann, G.A.D. Ritchie, J. Chem. Phys. 140, 054311 (2014).

2013

94. Using a DS-DBR laser for widely tunable near-infrared cavity ring-down spectroscopy K.E. Whittaker, L. Ciaffoni, G. Hancock, P.L. Hurst, R. Peverall, G.A.D. Ritchie, Appl. Phys. B. 116, 157-168 (2013) DOI 10.1007/s00340-013-5667-z

93. Micro-rheological investigations in ionic liquids using optical trapping techniques R.D. Dear, E.K. Worrall, W. Gault, G.A.D. Ritchie, J. Phys. Chem. B 17, 10567 (2013).

92. Demonstration of a novel laser driven light source for broadband spectroscopy between 170 nm and 2.0 μm M. Islam, L. Ciaffoni, G. Hancock, G.A.D. Ritchie, The Analyst 138, 4741 (2013).

91. Linear cavity optical-feedback cavity-enhanced absorption spectroscopy with a quantum cascade laser A.G.V. Bergin, G. Hancock, G.A.D. Ritchie, Opt. Lett. 38, 2475 (2013).

90. Atomic orientation following predissociation of the C3Πg Rydberg state of molecular oxygen A. Gilchrist, G.A.D. Ritchie, J. Chem. Phys. 138, 214307 (2013).

89. Optical trapping and spectroscopic characterisation of ionic liquid solutions L.J. Moore, M.D. Summers, G.A.D. Ritchie, Phys. Chem. Chem. Phys. 15, 13489-13498 (2013) DOI 10.1039/C3CP50895A

88. Sub-Doppler spectroscopy with an external cavity quantum cascade laser R.J. Walker, J. Kirkbride, J-P.H. van Helden, D. Weidmann, G.A.D. Ritchie, App. Phys. B 112, 159-167 (2013) DOI 10.1007/s00340-013-5410-9 (2013).

87. Vector correlations in the O2 (a1Δg, v = 1) fragment formed in the 265 nm photodissociation of ozone G. Hancock, G.A.D Ritchie, T.R. Sharples, Mol. Phys. DOI:10.1080/00268976.2013.780104 (2013)

86. Predissociation dynamics of the C 3Pg Rydberg state of molecular oxygen A. Gilchrist and G.A.D. Ritchie, J. Chem. Phys 138 104320 (2013)

85. Coherent Transient Spectroscopy with Continuous Wave Quantum Cascade Lasers J.M.R. Kirkbride, S.E. Causier, E.A. McCormack, D. Weidmann, G.A.D. Ritchie, Phys. Chem. Chem. Phys. 15, 2684-2691 (2013) DOI: 10.1039/C2CP44116k (2013).

84. Demonstration of a Mid-Infrared Cavity Enhanced Absorption Spectroscopy for Breath Acetone Detection L. Ciaffoni, G. Hancock, J. J. Harrison, J. H. van Helden, C. E. Langley, R. Peverall, G.A.D. Ritchie, S. Wood, Analytical Chemistry, 85, 846-850 (2013) DOI: 10.1021/ac3031465

83. Demonstration of a widely tunable digital supermode distributed Bragg reflector laser as a versatile source for near-infrared spectroscopy, L. Ciaffoni, G. Hancock, P.L. Hurst, M. Kingston, C.E. Langley, R. Peverall, G.A.D. Ritchie, K.E. Whittaker, Appl. Phys. B 110, 139-145 (2013) DOI: 10.1007/s00340-011-4869-5

2012

82. Single aerosol trapping with an annular beam: improved particle localisation, R. D. Dear, D. R. Burnham, M. D. Summers, D. McGloin, G. A. D. Ritchie, Phys. Chem. Chem. Phys. 14, 15826, (2012) DOI: 10.1039/C2CP42925J

81. A DFG-based cavity ring-down spectrometer for trace gas sensing in the mid-infrared, K.E. Whittaker, L. Ciaffoni, G. Hancock, R. Peverall, G.A.D. Ritchie, Appl. Phys. B 109, 333-343 (2012) DOI: 10.1007/s00340-012-5150-2

80. Combining a DS-DBR laser with QPM-DFG for mid-infrared spectroscopy, K.E. Whittaker, L. Ciaffoni, G. Hancock, M. Islam, R. Peverall, G.A.D. Ritchie, Appl. Phys. B 109, 423-432 (2012) DOI: 10.1007/s00340-012-5071-0

79. UV photodissociation dynamics of iodobenzene: effects of fluorination, D. Murdock, M. B. Crow, G. A. D. Ritchie, M. N. R. Ashfold, J. Chem. Phys. 136, 124313, (2012) DOI: 10.1063/1.3696892

78. Noise-immune cavity-enhanced optical heterodyne detection of HO2 in the near-infrared, C. L. Bell, J-P. van Helden, G. Hancock, N. J. van Leeuwen, R. Peverall, G. A. D. Ritchie, J.. Phys. Chem. A, 116, 5090, (2012) DOI: 10.1021/jp301038r

77. Electronic polarization effects in the photodissociation of Cl2, E. Campbell, A. B. Alekseyev, G. Balint-Kurit, M. Brouard, A. Brown, R. Buenker, R. Cireasa, A. J. Gilchrist, A. Johnsen, D. Kokh, S. Lucas, G. A. D. Ritchie, T. R. Sharples, B. Winter, J. Chem. Phys. 136, 164311 (2012), DOI: 10.1063/1.4704830

76. Directed assembly of optically bound matter, M.D. Summers, R.D. Dear, J.M. Taylor, G.A.D. Ritchie, Opt. Express 20, 1001, (2012).

75. Population transfer and rapid passage effects in a low pressure gas using a continuous wave quantum cascade laser, E.A. McCormack, H.S. Lowth, M.T. Bell, D. Weidmann, G.A.D. Ritchie, J. Chem. Phys. 137, 034306, (2012)

74. Laser spectroscopy on volatile sulfur compounds: possibilities for breath, L. Ciaffoni, R. Peverall, G.A.D. Ritchie, J. Breath Res. 5, 024002, (2012).

2011

73. Laser-based absorption spectroscopy as a technique for rapid in-line analysis of respired gas concentrations of oxygen and carbon dioxide, B. Cummings, M. Hamilton, L. Ciaffoni, T. R. Pragnell, R. Peverall, G. A. D. Ritchie, G. Hancock, P. A. Robbins, J. Appl. Phys. 111, 303 (2011).

72. Rapid passage signals from a vibrationally excited target molecule: a pump and probe experiment with continuous wave quantum cascade lasers, R. J. Walker, J. H. van Helden, J. Kirkbride, E. A. McCormack, M. T. Bell, D. Weidmann, G. A. D. Ritchie, Opt. Lett. 36, 4725, (2011).

71. Conformer specific dissociation dynamics of iodocylohexane studied by velocity map imaging, D. Zaouris, A. Wenge, D. Murdock, T. Oliver, G. Richmond, G. A. D. Ritchie, R. N. Dixon, M. N. R. Ashfold, J. Chem. Phys. 135, 094312, (2011), DOI: 10.1063/1.3628682

70. Optical detection of the anesthetic agent propofol in the gas phase, T. Laurila, T. Sorvajarvi, J. Saarela, J. Toivonen, D. W. Wheeler, L. Ciaffoni. G. A. D. Ritchie, C. F. Kaminski, Analytical Chemistry, 83, 3963, (2011), DOI: 10.1021/ac200690f

69. nσ* and πσ* excited states in aryl halide photochemistry: a comprehensive study of the UV photodissociation dynamics of iodobenzene, A. G. Sage, T. A. A. Oliver, D. Murdock, M. B. Crow, G. A. D. Ritchie, J. N. Harvey, M. N. R. Ashfold, Phys. Chem. Chem. Phys. 13, 8075 (2011), DOI: 10.1039/C0CP02390F

68. A 3μm difference frequency laser source for probing hydrocarbon plasmas, N. J. Van Leeuwen, L. J. Moore, W. D. Partridge, R. Peverall, G. A. D. Ritchie, J. Phys. D 44, 12502 (2011).

67. Near-field optical trapping with an actively-locked cavity, N.J. van Leeuwen, L.J. Moore, W.D. Partridge, R. Peverall, G.A.D. Ritchie, M.D. Summers, J. Opt. 13, 044007, (2011).

66. Trace species detection in the near infrared using Fourier transform broadband cavity enhanced absorption spectroscopy: initial studies on potential breath analytes, W. Denzer, G. Hancock, M. Islam, C. E. Langley, R. Peverall, G. A. D. Ritchie, D. Taylor, The Analyst, 136, 801 (2011).

65. Chirped quantum cascade laser induced rapid passage signatures in an optically thick gas, J.H. Northern, G.A.D. Ritchie, E.P. Smakman, J.H. van Helden, R.J. Walker, G. Duxbury, App. Phys. B 102, 37, (2011).

2010

64. Quantum cascade laser absorption spectroscopy of the 1-0 band of Deuterium Bromide at 5μm, R.J. Walker, J.H. van Helden, G.A.D. Ritchie, Chem. Phys. Lett. 501, 20 (2010).

63. Controlled formation of optically bound matter in evanescent fields, M.D. Summers, R.D. Dear, J.M. Taylor, G.A.D. Ritchie, Proc. SPIE 7762, 776213, (2010), DOI:10.1117/12.860685

62. Adsorption of cytochrome c to silica surfaces studied using evanescent wave broadband cavity-enhanced absorption spectroscopy, L.J. Moore, L. van der Sneppen, R. Peverall, G. Hancock, G.A.D. Ritchie, Proc. SPIE 7758, 77580G, (2010), DOI:10.1117/12.860715

61. Direct observation of grain rotation induced grain coalescence in two dimensional colloidal crystals, L.J. Moore, R.D. Dear, M.D. Summers, R.P.A. Dullens, G.A.D. Ritchie, Nano Lett. 10, 4266, (2010).

60. Applications of mid infrared quantum cascade lasers to spectroscopy, G. Hancock, G.A.D. Ritchie, J.H. van Helden, R.J. Walker, D. Weidmann, Opt. Eng. 49, 111121, (2010).

59. Rapid passage signals induced by chirped quantum cascade laser radiation: K state dependent delay effects in the n2 band of NH3, J Cockburn, G. Duxbury, J. H. Northern, G. A. D. Ritchie, E. P. Smakman, J. H. van Helden, Opt. Lett. 35, 2750, (2010).

58. Multimode Absorption Spectroscopy, MUMAS, using wavelength modulation and cavity enhancement techniques, M.L. Hamilton, G.A.D. Ritchie, Y. Arita, P. Ewart, App. Phys. B 100, 665 ,(2010).

57. Frequency modulated circular dichroism spectroscopy: application to ICN Photodissociation, G. Richmond, G.A.D. Ritchie, S.E. Taylor, M.L. Costen, G.E. Hall, Molecular Physics 108, 1083, (2010).

56. Following interfacial kinetics in real time using broad-band evanescent-wave cavity-enhanced absorption spectroscopy: A comparison of light-emitting diodes and supercontinuum sources, L. van der Sneppen, G. Hancock, C. Kaminski, T. Laurila, S.R. Mackenzie, S.R.T. Neil, R. Peverall, G.A.D. Ritchie, The Analyst 135, 133, (2010).

2009

55. Near-infrared broad-band cavity enhanced absorption spectroscopy using a superluminescent light emitting diode, W. Denzer, M.L. Hamilton, G. Hancock, M. Islam, C.E. Langley, R. Peverall, G.A.D. Ritchie, The Analyst 134, 2220, (2009).

54. A chemometric study on human breath mass spectra for biomarker identification in cystic fibrosis, L. Bennett, L. Ciaffoni, W. Denzer, G. Hancock, A.D. Lunn, R. Peverall, G.A.D. Ritchie, J. Breath Res. 3, 046002, (2009).

53. Mid-IR ethene detection using difference frequency generation in a quasi-phase matched LiNbO3 waveguide,  L. Ciaffoni, R. Grilli, G. Hancock, A.J. Orr-Ewing, R. Peverall, G.A.D. Ritchie, Applied Optics 48, 5696, (2009).

52. Diode laser based studies of the UV photolysis of molecular iodine, G. Hancock, G. Richmond, G.A.D. Ritchie, S.R. Taylor, Phys. Chem. Chem. Phys11, 6415, (2009).

51. Direct and wavelength modulation spectroscopy using an external cavity quantum cascade laser, G. Hancock, J.H. van Helden , R. Peverall, G.A.D. Ritchie, R.J. Walker, App. Phys. Lett. 94, 201110, (2009).

50. Characterization of an external cavity diode laser based ring cavity NICE-OHMS system, C.L. Bell, G. Hancock, R.Peverall, G.A.D. Ritchie, J.H. van Helden, and N.J. van Leeuwen, Optics Express 17, 9834, (2009).

49. High resolution absorption studies of the 1A2 1A1 220410 band of formaldehyde, M.B Crow, A. Gilchrist, G. Hancock, R. Peverall G. Richmond, G.A.D. Ritchie, J. Phys. Chem A. 113, 6689, (2009)

48. Wavelength modulation and cavity enhanced absorption spectroscopy using 1.9 μm radiation produced by difference frequency generation with a MgO doped PPLN crystal, M.L. Hamilton, R Peverall, G.A.D. Ritchie, L.J. Thornton, J.H. van Helden, App. Phys B. 97, 715 (2009).

47. Rapid passage effects in nitrous oxide induced by a chirped external cavity quantum cascade laser, J.H. van Helden , R. Peverall, G.A.D. Ritchie, R.J. Walker, App. Phys. Lett. 94, 051116, (2009).

46. Ultrasensitive cavity enhanced techniques using cw diode lasers, J.H. van Helden , R. Peverall,  G.A.D. Ritchie, in Cavity Ringdown Spectroscopy: Techniques and Applications, Ed. G. Berden and R. Engeln, Wiley Blackwell (2009).

45. 3.5 mm high-resolution gas sensing employing a LiNbO3 QPM DFG waveguide module,  L. Ciaffoni, R. Grilli, G. Hancock, A.J. Orr-Ewing, R. Peverall, G.A.D. Ritchie, App. Phys. B 94, 517, (2009)

44. Cavity enhanced absorption spectroscopy measurements of pressure-induced broadening and shift coefficients in the υ1 +υ3 combination band of ammonia, C.L. Bell,  M.Dhib, G. Hancock, G.A.D. Ritchie, J.H. van Helden, and N.J. van Leeuwen, Appl. Phys. B 94, 327, (2009)

43. Optical feedback cavity enhanced absorption spectroscopy with diode lasers: a sensitive tool for environmental and medical detection, S.G. Baran, G. Hancock, R. Peverall, G.A.D. Ritchie, N.J. van Leeuwen, The Analyst 134, 243, (2009) (Front cover article)

2008

42. Time resolved detection of the CF3 photofragment using chirped QCL radiation G. Hancock, S.J. Horrocks, G.A.D. Ritchie, J.H. van Helden, R. Walker, J. Phys. Chem. A  112,  9751, (2008)

41. Line strength and collisional broadening studies of hydrogen sulphide in the 1.58mm range using diode laser spectroscopy, L. Ciaffoni, B.L. Cummings, W. Denzer, R. Peverall, S.R. Procter, G.A.D. Ritchie, Applied Physics B. 92, 627, (2008)

40. Application of quantum cascade lasers in studies of low-pressure plasmas: Characterization of rapid passage effects on density and temperature measurements, J.H. van Helden, S.J. Horrocks and G.A.D. Ritchie, App. Phys. Lett. 92,  081506, (2008)

39. Methyl iodide photodissociation at 193 nm: the I(2P1/2) quantum yield, A. Gilchrist, G. Hancock, R. Peverall, G. Richmond, G.A.D. Ritchie, S.E. Taylor, J. Phys. Chem. A  112, 4531, (2008)

2007

38. The number density of ground state atomic oxygen (O 3P2) measured in an inductively coupled plasma chamber by cavity enhanced absorption, G. Hancock, R. Peverall, G.A.D Ritchie, L.J. Thornton, J. Phys. D 40, 4515,  (2007)

37. Speed dependent rotational angular momentum polarization of the O2 (a 1Dg) fragment following ozone photolysis in the wavelength range 248-265  nm, S.J. Horrocks, G.A.D. Ritchie, T.R. Sharples, J. Chem. Phys. 127, 114308, (2007)

36. Photodissociation dynamics of C2F5I and CF3I studied by laser gain frequency modulation spectroscopy, A. Hutchinson, G. Hancock, R. Peverall, G.A.D. Ritchie, G. Richmond, S.E. Taylor, Phys. Chem. Chem. Phys. 9, 2234, (2007)

35. Rotational analysis of the 2n5 band of formaldehyde, S. Saha, H.R. Barry, G. Hancock, G.A.D. Ritchie, C.M. Western, Molecular Physics 105, 797, (2007)

34. Vector properties of the O2 (a 1Dg) fragment produced from the photolysis of ozone in the long wavelength tail of the Hartley band, S.J. Horrocks, G.A.D. Ritchie, T.R. Sharples, J. Chem. Phys. 126,  Art. No. 044308, (2007)

33. The application of quasi-phase matched LiNbO3 ridge waveguides to mid-infrared spectroscopic detection, W. Denzer, G. Hancock, A. Hutchinson, M. Munday, R. Peverall, G.A.D. Ritchie, App. Phys. B 86, 437, (2007).

2006

32. The photodissociation dynamics of ozone at 193nm: an O(1D2) angular momentum polarization study, M. Brouard, R. Cireasa, A.P. Clark, G.C. Groenenboom, G. Hancock, S.J. Horrocks, F. Quadrini, G.A.D. Ritchie, C. Vallance, J. Chem. Phys. 125, art 133308 (2006)

31. Vector properties of the O(1D) fragment produced from the photolysis of ozone in the wavelength range 298 nm to 320 nm, S. J. Horrocks, P. J. Pearson, G. A. D. Ritchie, J. Chem. Phys.  125, art 133313 (2006)

30. Absolute number density of vibrationally excited N2 (A) produced in a low pressure discharge, G. Hancock, R. Peverall, G.A.D Ritchie, L.J. Thornton, J. Phys. D 39, 1846, (2006)

29. REMPI-TOF studies of the translational anisotropy and the polarization of the O (1D2) photofragment angular momentum following ozone photolysis at 298 nm, W. Denzer, S. J. Horrocks, P. J. Pearson, G.A.D. Ritchie, Phys. Chem. Chem. Phys. 8, 1954, (2006)

28. Number density and temperature measurements obtained using sensitive diode laser spectroscopy in an Ar plasma, B. Bakowski, G. Hancock, R. Peverall, G.A.D Ritchie, App. Phys. B 82, 123, (2006)

2005

27. Photolysis wavelength dependence of the translational anisotropy and the angular momentum polarization of O2 (a 1Dg) formed from the uv photodissociation of O3, S.J. Horrocks, G. Hancock, P. Pearson, G.A.D Ritchie, D.F Tibbetts, J. Chem. Phys. 122,  art no. 244321 (2005)

26. Diode laser measurements of the Ar 3p54s1 excited states in an inductively coupled RF plasma, B. Bakowski, G. Hancock, R. Peverall, G.A.D Ritchie, L.J Thornton,  J. Phys. D 38, 2769, (2005)

25. Cavity ringdown and cavity enhanced spectroscopy using diode lasers, M. Mazurenka, A.J. Orr-Ewing, R. Peverall, G.A.D Ritchie, Ann. Rep. Prog. Chem. C, 101, 100, (2005)

Pre-2005

24. Difference frequency generation in periodically poled lithium niobate and its use in the detection of atmospheric methane, H.Y. Clark, L. Corner, W. Denzer, G. Hancock, A. Hutchinson, M. Islam, R. Peverall G.A.D Ritchie, Chem. Phys. Lett. 399, 102, (2004)

23. Rotational quantum state dependent alternations in the angular momentum polarization of O2 (a 1Dg) formed in the uv photodissociation of O3, G. Hancock, P. Pearson, G.A.D Ritchie, D.F Tibbetts, Chem. Phys. Lett. 393, 425, (2004)

22. Characterisation of an inductively coupled N2 plasma using sensitive diode laser spectroscopy, B. Bakowski, G. Hancock, R. Peverall, G.A.D Ritchie, L.J. Thornton, J. Phys. D 37, 2064, (2004)

21. Measurements of molecular fragment alignment and orientation in the uv photodissociation of NO2 and O3,  G. Hancock, P. Pearson, G.A.D Ritchie, D.F Tibbetts, Phys. Chem. Chem. Phys. 5, 5386, (2003)

20. Diode laser based detection and determination of pressure-induced broadening coefficients in the n1+n3 combination band of ammonia, J. Gibb, G. Hancock, R. Peverall, G.A.D Ritchie, L. Russell, European Physical Journal D 28, 59, (2004)

19. On the accurate determination of pressure induced line shift in the (002) band of H2O at 1320nm, J. Gibb, G. Hancock, A. Hutchinson, R. Peverall, G.A.D Ritchie, Applied Physics B 76, 97, (2003)

18. Measurements of pressure broadening coefficients of selected transitions in the 2n5 band of formaldehyde, H.R. Barry, L. Corner, G. Hancock, R. Peverall, T.L. Ranson, G.A.D Ritchie, Phys. Chem. Chem. Phys. 5, 3106, (2003)

17. Wavelength-modulation spectroscopy using a frequency-doubled current-modulated diode laser, G. Hancock, V.L. Kasyutich, G.A.D Ritchie, Applied Physics B 74, 569, (2002)

16. Single-tone frequency modulation spectroscopy with frequency doubled current-modulated diode laser light, G. Hancock, V.L. Kasyutich, G.A.D Ritchie, Optics Letters 27, 763, (2002)

15. A tunable diode laser source based on an external resonant cavity for OH absorption detection , J. Gibb, G. Hancock, V.L. Kasyutich, G.A.D Ritchie, Proceedings of SPIE 4749, 192, (2002)

14. Sum frequency generation at 309nm using a violet and a near-IR DFB diode laser for detection of OH, L. Corner, J. Gibb, G. Hancock, A. Hutchinson, V.L. Kasyutich, R. Peverall, G.A.D Ritchie, Applied Physics B 74, 441, (2002)

13. Cross-sections in the 2n5 band of formaldehyde studied by cavity enhanced absorption spectroscopy near 1.76mm, H.R. Barry, L. Corner, G. Hancock, R. Peverall, G.A.D Ritchie, Phys. Chem. Chem. Phys. 4, 445, (2002)

12. Cavity enhanced absorption spectroscopy with a rapidly swept diode laser, B. Bakowski, L. Corner, G. Hancock, R. Kotchie, R. Peverall, G.A.D Ritchie,  Applied Physics B 75, 745, (2002)

11. Cavity enhanced absorption spectroscopy of methane at 1.73mm, H. R. Barry, L.Corner. G. Hancock, R. Peverall, G.A.D Ritchie, Phys. Chem. Chem. Phys.333, 285, (2001)

10. The Photodissociation Dynamics of Tropospheric Ozone, G. Hancock, R.D Johnson, J.C Pinot de Moira, G.A.D Ritchie, P.L Tyley.  Advances in Atomic and Molecular Beams, ed. R. Campargue, Springer Verlag, Berlin (2000).

9. Slit-Jet Spectroscopy of Bromomethylene, B.C Chang, M.L Costen, A.J Marr, G.A.D Ritchie, G.E Hall, T.J Searsk, J. Mol. Spec. 202, 131, (2000)

8. OH detection by absorption of frequency doubled diode laser radiation at 308nm, H.R Barry, B. Bakowski, L. Corner, T.G.M Freegarde, O.T.W Hawkins, G. Hancock, R.M Jacobs, R. Peverall, G.A.D Ritchie, Chem. Phys. Lett. 319, 125, (2000)

7. Vector correlations in the 355nm photolysis of thermal NO2, R.P Baker, M.L Costen, G. Hancock, G.A.D Ritchie, D. Summerfield, Phys. Chem. Chem. Phys. 2, 661, (2000)

6. Dynamics of the reaction O(3P) + H2S: (II) State-resolved Differential Cross-sections and Angular Momentum Polarisation, M.L Costen, G. Hancock, G.A.D Ritchie, J. Phys. Chem. A 103, 10651, (1999)

5. Dynamics of the reaction O(3P) + H2S: (I) Rotational and Fine Structure Distributions, M.L Costen, G. Hancock, G.A.D Ritchie, J. Phys. Chem. A 103, 10644, (1999)

4. Investigation of two-photon dissociation of NO at 275nm using Velocity Map Imaging, B.L.G Bakker, G.A.D Ritchie, D.H Parker, G. Hancock, Chem. Phys. Lett. 294, 565 ,(1998)

3. Generation of N(2D) and N(4S) atoms from two-colour dissociation of NO investigated by Velocity Map Imaging, G.A.D Ritchie, B.L.G Bakker, G. Hancock, D.H Parker, M.L Costen, A.T.B Eppink, Chem. Phys. Lett. 283, 319, (1998)

2. The effect of translational energy on the dynamics of the reaction O(3P) + CS(X1S+) CO(X1S+) + S(3P), D. Summerfield, M.L Costen, G. Hancock, G.A.D Ritchie, A.J Orr-Ewing, T.W.R Hancock, J. Chem. Phys. 106, 1391, (1997)

1. Fourier Transform Infra-Red Spectra of Formaldoxime - the n7, n9, n11, n12 and 2n12 bands, S. Klee, R. Bannai, G.A.D Ritchie, G. Duxbury, J. Mol. Spec. 81, 5945, (1997)

Atmospheric Chemistry

Foundations of Physics for Chemists, G.A.D. Ritchie & D.S. Sivia, Oxford Chemistry Primer #93 (OUP, 2000).

Chapter 2: Cavity Enhanced Techniques Using Continuous Wave Lasers, J.H. van Helden, R. Peverall, G.A.D. Ritchie, in Cavity Ring-Down Spectroscopy: Techniques and Applications, ed. by G. Berden, R. Engeln (John Wiley & Sons, Inc., Chichester, 2009)

Atmospheric Chemistry : From the Surface to the Stratosphere. World Scientific ISBN: 978-1-78634-175-4 

http://www.worldscientific.com/worldscibooks/10.1142/q0052