ISSN:
1434-6079
Keywords:
36.40
;
35.20.V
;
33.80.E
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The photoionisation threshold region of homogeneous Argon and Krypton clusters Ar n and Kr n forn up to 24 formed in a free jet expansion has been studied in detail, using the threshold photoelectron photoion coincidence (TPEPICO) time of flight technique. Measurements performed at a variety of different expansion conditions (nozzle temperature and stagnation pressure) demonstrate that fragmentation of larger clusters contributes substantially to the shape of the TPEPICO spectra even for the smallest clusters and at all photon energies higher than about 200 meV to 400 meV above the ionisation threshold. The determination of ionisation potentials for these cluster ions is discussed and careful estimates are given and compared with recent theoretical values.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01429284
