Abstract.
Delayed emission is a common decay process for very excited complex systems where the excitation energy is, to a large extent, statistically distributed over all accessible degrees of freedom. A rich variety of delayed decay processes is found in complex molecules and clusters such as thermionic emission, evaporation of heavy fragments or blackbody radiation. In this article, we present the general threshold laws that govern the kinetic energy spectrum of matter particles (electrons or fragments) ejected from spherically symmetric species in such processes, and we illustrate these laws by experimental results obtained in photoelectron and photoion spectroscopy. Deviations from simple laws for non spherical species are also evidenced.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E.E.B. Campbell, R.D. Levine, Annu. Rev. Phys. Chem. 51, 65 (2000)
V. Weisskopf, Phys. Rev. 52, 295 (1937)
O.K. Rice, H.C. Ramsperger, J. Amer. Chem. Soc. 49, 1617 (1927); L.S. Kassel, J. Phys. Chem. 35, 1065 (1928); R.A. Marcus, O.K. Rice, J. Phys. Coll. Chem. 55, 894 (1951); R.A. Marcus, J. Chem. Phys. 20, 359 (1952)
J.C. Light, Disc. Faraday Soc. 44, 14 (1967); C.E. Klots, J. Phys. Chem. 75, 1526 (1971); W.J. Chesnavitch, M.T. Bowers, J. Chem. Phys. 66, 2306 (1977)
Unimolecular reactions, a concise introduction, edited by W. Forst (Cambridge University Press, 2003)
J.U. Andersen, C. Gottrup, K. Hansen, P. Hvelplund, M.O. Larsson, Eur. Phys. J. D 17, 189 (2001)
J.U. Andersen, E. Bonderup, K. Hansen, J. Phys. B 35, R1 (2002)
C.E. Klots, J. Chem. Phys. 100, 1035 (1994)
C.E. Klots, J. Chem. Phys. 98, 1110 (1993)
F. Calvo, P. Parneix, Comput. Mat. Sci. 35, 198 (2006)
A. Amrein, R. Simpson, P. Hackett, J. Chem. Phys. 94, 4663 (1991)
G. Ganteför, W. Eberhardt, H. Weidele, D. Kreisle, E. Recknagel, Phys. Rev. Lett. 77, 4524 (1996)
K. Gluch, S. Matt-Leubner, O. Echt, B. Concina, P. Scheier, T.D. Märk, J. Chem. Phys. 121, 2137 (2004)
Imaging in Molecular Dynamics, edited by B.J. Whitaker (Cambridge University Press, 2003)
D.W. Chandler, P.L. Houston, J. Chem. Phys. 87, 1445 (1987)
A.T.J.B. Eppink, D.H. Parker, Rev. Sci. Instrum. 68, 3477 (1997)
C. Bordas, F. Paulig, H. Helm, D.L. Huestis, Rev. Sci. Instrum. 67, 2257 (1996)
B. Baguenard, J.B. Wills, F. Pagliarulo, F. Lépine, B. Climen, M. Barbaire, C. Clavier, M.A. Lebeault, C. Bordas, Rev. Sc. Instrum. 75, 324 (2004)
F. Lépine, B. Climen, F. Pagliarulo, B. Baguenard, M.-A. Lebeault, C. Bordas, M. Hedén, Eur. Phys. J. D 24, 393 (2003)
F. Lépine, C. Bordas, Phys. Rev. A 69, 053201 (2004)
B. Baguenard, J.C. Pinaré, F. Lépine, C. Bordas, M. Broyer, Chem. Phys. Lett. 352, 147 (2002)
J.B. Wills, F. Pagliarulo, B. Baguenard, F. Lépine, Ch. Bordas, Chem. Phys. Lett. 390, 145 (2004)
J.C. Pinaré, B. Baguenard, C. Bordas, M. Broyer, Phys. Rev. Lett. 81, 2225 (1998)
B. Baguenard, J.C. Pinaré, C. Bordas, M. Broyer, Phys. Rev. A 63, 023204 (2001)
F. Pagliarulo, B. Climen, B. Baguenard, F. Lépine, M.A. Lebeault, A. Ollagnier, J. Wills, C. Bordas, Int. J. Mass Spectr. 252, 100 (2006)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Climen, B., Pagliarulo, F., Ollagnier, A. et al. Threshold laws in delayed emission: an experimental approach. Eur. Phys. J. D 43, 85–89 (2007). https://doi.org/10.1140/epjd/e2007-00116-7
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epjd/e2007-00116-7