Abstract
Line-width and-shape of absorption lines of the ν2 vibration of ammonia were measured for a series of transitions starting from vibrational groundstate levels with a different rotational energy. An increase in linewidth was found for larger rotational energies of the initial states. This effect has been attributed to the spatial rotational non-equilibrium in the supersonic jet expansion.
For expansion of NH3 seeded in He and Ar a very pronounced dip in the absorption profile has been observed, due to the formation of clusters.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
R.E. Smalley, D.H. Levy, L. Wharton: J. Chem. Phys.64, 3266 (1976)
K. Bergtmann, U. Hefter, J. Witt: J. Chem. Phys.72, 4777 (1980)
D.H. Levy: Ann. Rev. Phys. Chem.31, 197 (1980)
T.R. Dyke, B.J. Howard, W. Klemperer J. Chem. Phys.56, 2442 (1972)
F.A. Baiocchi, T.A. Dixon, W. Klemperer J. Chem. Phys.77, 1632 (1982)
T.J. Balle, E.T. Campbell, M.R. Keenan, W.H. Flygare: J. Chem. Phys.71, 2723 (1979)
J.A. Shea, W.H. Flygare: J. Chem. Phys.76, 4857 (1982)
G. Luijks, S. Stolte, J. Reuss: Chem. Phys.62, 217 (1981)
Y. Mizugai, H. Kuze, H. Jones, M. Takami: Appl. Phys. B32, 43 (1983)
G.D. Hayman, J. Hodge, B.J. Howard, J.S. Muenter, T.R. Dyke: Chem. Phys. Lett.118, 12 (1985)
P.B. Davies, A.J. Morton-Jones: Infrar. Phys.25, 215 (1985)
P. Wallraff, K.M.T. Yamada, G. Winnewisser: Z. Naturforsch.42a, 246 (1987)
K. Veeken, J. Reuss: Appl. Phys. B34, 149 (1984)
H.W. Lülf, P. Andresen: InRarefied Gas Dynamics 13, Vol. 1, ed. by O.M. Belotserkovskii, M.N. Kogan, S.S. Kutateladze, A.K. Rebrov (Plenum, New York 1982) p. 912
M.A. Gaveau, D. Boscher, J.P. Martin: Chem. Phys. Lett.107, 31 (1984)
O.F. Hagena, W. Henkes: Z. Naturforsch.15A, 851 (1960)
J.B. Anderson, J.B. Fenn: Phys Fluids8, 780 (1965)
H. Ashkenas, F.S. Sherman:Rarefied Gas Dynamics 4 (Academic, New York 1966) pp. 84–105
D. Bassi, A. Boschetti, S. Marchetti, G. Scoles, M. Zen: J Chem. Phys.74 2221 (1981)
P.R. Chakraborti, R. Talukdar, P.N. Bajaj, A. Joshi, V.B. Kartha: Chem. Phys.95, 145 (1985)
G. Baldacchini, S. Marchetti, V. Montelatici: Chem. Phys. Lett.91, 423 (1982)
F. Huisken, T. Persch: Chem. Phys. Lett.123, 99 (1986)
D.L. Snavely, S.D. Colson, K.B. Wiberg: J. Chem. Phys.74, 6975 (1981)
G. Luijks, S. Stolte, J. Reuss: Chem. Phys. Lett.94, 48 (1983)
M. Snels, W. Leo Meerts: Appl. Phys. B45, 27 (1988)
R. de Bekker, M. Ebben, M. Snels, S. Stolte: Laser Chemistry (1988)
H.D. Barth, F. Huisken: J. Chem. Phys.87, 2549 (1987)
J.P. Martin: Private communication
H.R. Murphy, D.R. Miller: InRarefield Gas Dynamics 14, Vol 2, ed. by H. Oguchi (University of Tokyo Press, 1984) p. 743
K.L. Saenger: J. Chem. Phys.75, 2467 (1981)
G. Baldacchini, S. Marchetti, V. Montelatici: Lett. Nuovo Cimento41, 439 (1984)
J. Hermanussen, G. Baldacchini: InProc. 11 th Int'l. Conf. on Infrared and Millimeter Waves, ed. by G. Moruzzi (Pisa 1986) p. 570