Abstract
Photoacoustic spectroscopy of iodine molecule has been studied in gas phase using nitrogen laser-pumped tunable dye laser. The experiment yielded the vibrational spectrum corresponding toX 1Σ+(0 + g )→B 3Π(0 + g ) transition up to the convergence limit. The photo-acoustic spectrum in the region 17580–18850 cm−1 is presented along with the vibrational analysis. Five of the vibrational bands reported earlier by Venkateswarlu, Kumar and McGlynn have been partially resolved and the structure of one of them has been analyzed and shown to be due to an overlap of (14, 2) and (12, 1) bands. The analysis was based on a comparison with the highly resolved spectrum of Gerstenkorn and Luc. The structure observed in the region 20200–20750 cm−1 which is beyond the convergence limit of the transitionX 1Σ+(0 + g )→B 3Π(0 + u ) has been analyzed as due to two-photon absorption. Most of the bands could be assigned to two transitions both originating in the ground state and terminating in two different electronic states 1 g andE(0 + g ), atT e=40821 cm−1 (orT 0=41355 cm−1) andT e=41411 cm−1 (orT 0=41355 cm−1) respectively.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Asundi R K and Venkateswarlu P 1947Indian J. Phys. 21 101
Brand J C D and Hoy A R 1983J. Mol. Spectrosc. 97 389
Brand J C D, Hoy A R, Kalkar A K and Yamashita 1982J. Mol Spectrosc. 95 350
Chakrapani G, Venkateswarlu P, Rao Y V and George M C 1987Rev Sci. Instrum. (in press)
DeYoung R J 1986IEEE J. Quantum Electron. QE-22 1019
DeYoung R J and Weaver W R 1986Appl. Phys. Lett. 49 369
Edlen B 1953J. Opt. Soc. Am. 43 339
Gerstenkorn S and Luc P 1978Atlas der Spectre. d’ Absorption de la Molecule de L’iode (14800–20000 cm−1), Editions du G N R S Paris, France
King G W, Littlewood I H and Robins J R 1981Chem. Phys. Lett. 56 145
Koffend J B, Sibai A M and Bacis R 1983 Collisionally induced optical-optical double resonance in I2: Rotational Analysis of the D’ (2g)- A’ (2u) Laser Transition (Private Communication)
Kumar D, Nauman R V, Mohanty R, McGlynn P and Findley G L 1983Rev. Sci. Instrum. 54 463
Kruzel R B, Steinfeld J I, Holtzenbuhler D A and Leroi G E 1971J. Chem. Phys. 55 4822
Lee Ja H and Weaver W R 1981Appl. Phys. Lett. 39 137
Luc P 1980J. Mol. Spectrosc. 80 41
Moore C E 1971Atomic energy levels (Washington D.C.: National Bureau of Standards) Vols 1–3
Mulliken R S 1934Phys. Rev. 46 549
Mulliken R S 1971Chem. Phys. 55 288
Pao Y H (ed.) 1977Optoacoustic spectroscopy and detection (New York: Academic Press)
Patel L K N and Tam A C 1981Rev. Mod. Phys. 53 517
Perrot J P, Broyer M, Chevaleyre J and Femelat B 1983J. Mol. Spectrosc. 98 161
Rosencwaig A (ed.) 1980Photoacoustics and photoacoustic spectroscopy (New York: John Wiley)
Reddy K V and Berry M J 1981 Photoacoustic spectroscopy, MB4 Technical Digest Second Int. Topical Meeting Optical Society of America, New York
Rottenberg L J, Bernstein B and Peters K S 1983J. Chem. Phys. 79 2569
Tennel K, Rose A, Pyrum J, Muzny C, Gupta R and Salamo G 1985 inLasers as reactants and probes in chemistry (eds) W M Jackson and A B Harvey (Washington DC: Howard University Press) p. 431
Venkateswarlu P 1977Indian J. Phys. Commem. Vol. II 273
Venkateswarlu P, Kumar D and McGlynn S P 1984Proc. Symp. on Lasers and Applications (eds) H D Bist and J S Goela (New Delhi: Tata McGraw-Hill)
Venkateswarlu P, Pramela T and Rao Y V 1986Spectrochim. Acta A42 285
Verma R D 1960J. Chem. Phys. 32 738
Viswanathan K S., Sur A and Tellinghuisen 1981J. Mol. Spectrosc. 86 393
Wieland K, Tellinghuisen J B and Nobbs A 1972J. Mol. Spectrosc. 41 69
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Venkateswarlu, P., Chakrapani, G., George, M.C. et al. Laser photoacoustic spectroscopy of iodine molecule: Single and two-photon absorption. Pramana - J Phys 29, 261–277 (1987). https://doi.org/10.1007/BF02845734
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02845734