Coherent raman spectroscopy of nitrogen molecules and clusters in supersonic jets
- 117 Downloads
- 5 Citations
Abstract
Coherent Stokes and anti-Stokes Raman scattering CSRS and CARS have been employed to study the spectroscopy of nitrogen molecules and clusters in the expansion of a supersonic jet. In the vibrational spectrum, at strong stagnation conditions, an intense redshifted peak is observed which can be assigned to the intramolecular vibrations in large N2 clusters having adopted the β-phase structure. Another weak feature is assigned to nitrogen clusters in the α-phase. In the rotational region of the spectrum only monomer features have been observed. The failing to observe librational motions is consistent with the finding that the nitrogen clusters are predominantly in the orientationally unordered β-phase. The low rotational temperature suggests supercooling of the β-phase.
PACS
36.40 42.65 47.40Preview
Unable to display preview. Download preview PDF.
References
- 1.Ber. Bunsenges. Phys. Chem. 88 (1984)Google Scholar
- 2.Surf. Sci. 156 (1985)Google Scholar
- 3.Z. Phys. D. 3 (1986)Google Scholar
- 4.Chem. Rev. 86, No. 3 (1986)Google Scholar
- 5.J. Phys. Chem. 91 (1987)Google Scholar
- 6.J.W. Nibler, J.J. Yang: Ann. Rev. Phys. Chem. 38, 349 (1987)Google Scholar
- 7.J.W. Nibler, G.A. Pubanz: In: Advances in Non-linear Spectroscopy, ed. by R.J.H. Clark, R.E. Hester (Wiley, New York 1988) pp. 1–50Google Scholar
- 8.H.-D. Barth, C. Jackschath, T. Pertsch, F. Huisken: Appl. Phys. B 45, 205 (1988)Google Scholar
- 9.H.-D. Barth, F. Huisken: J. Chem. Phys. 87, 2549 (1987)Google Scholar
- 10.H.-D. Barth, F. Huisken: Chem. Phys. Lett. 169, 198 (1990)Google Scholar
- 11.R. Beck, J.W. Nibler: Chem. Phys. Lett. 148, 271 (1988)Google Scholar
- 12.R.D. Beck, M.F. Hineman, J.W. Nibler: J. Chem Phys. 92, 7068 (1990)Google Scholar
- 13.A.A. Ilyukhin, R.L. Pykhov, V.V. Smirnov, G. Marowsky: Appl. Phys. B 51, 192 (1990)Google Scholar
- 14.P. Huber-Wälchli, J.W. Nibler: J. Chem. Phys. 76, 273 (1982)Google Scholar
- 15.C.Y. She, H. Moosmüller, G.C. Herring: Appl. Phys. B 46, 283 (1988)Google Scholar
- 16.C.M. Roland, W.A. Steele: J. Chem. Phys. 73, 5919 (1980)Google Scholar
- 17.G.A. Shirley, R.J. Hall, A.C. Eckbreth: Opt. Lett. 5, 380 (1980)Google Scholar
- 18.A.C. Eckbredh, T.J. Anderson: Opt. Lett. 11, 496 (1986)Google Scholar
- 19.M. Aldén, P.-E. Bengtsson, H. Edner: Appl. Opt. 25, 4493 (1986)Google Scholar
- 20.B. Dick, A. Gierulski: Appl. Phys. B 40, 1 (1986)Google Scholar
- 21.F. Huisken, T. Pertsch: Appl. Phys. B 41, 173 (1986)Google Scholar
- 22.A.C. Eckbreth: Appl. Phys. Lett. 32, 421 (1978)Google Scholar
- 23.G. Placzek, E. Teller: Z. Physik 81, 209 (1933)Google Scholar
- 24.D.R. Miller: In: Atomic and Molecular Beam Methods, ed. by G. Scoles (Oxford, New York 1988) p. 14Google Scholar
- 25.H. Ashkenas, F.S. Sherman: In: Proc. 4th Int. Symp. on Rarefied Gas Dynamics, ed. by J.H. de Leeuw (Academic, New York 1966) Vol. II, p. 84Google Scholar
- 26.J.B. Anderson: In: Molecular Beams and Low Density Gas Dynamics, ed. by P.P. Wegener (Dekker, New York 1974) p. 1Google Scholar
- 27.O.F. Hagena: In: Molecular Beams and Low Density Gas Dynamics, ed. by P.P. Wegener (Dekker, New York 1974) p. 93Google Scholar
- 28.O.F. Hagena: Surf. Sci. 106, 101 (1981)Google Scholar
- 29.W.F. Giauque, J.O. Clayton: J. Am. Chem. Soc. 55, 4875 (1933)Google Scholar
- 30.J.E. Cahill, G.E. Leroi: J. Chem. Phys. 51, 1324 (1969)Google Scholar
- 31.A. Anderson, T.S. Sun, M.C.A. Donkersloot: Can. J. Phys. 48, 2265 (1970)Google Scholar
- 32.F.D. Medina, W.B. Daniels: J. Chem. Phys. 64, 150 (1976)Google Scholar
- 33.J. Bendtsen: J. Raman Spectrosc. 2, 133 (1974)Google Scholar
- 34.C.A. Long, G. Henderson, G.E. Ewing: Chem. Phys. 2, 485 (1973)Google Scholar