Experimental evidence for vacancy sharing between L subshells in very asymmetric ion-atom collisions

Investigation of the vacancy sharing process in L-shell ionization of gold and bismuth by boron ions

“…In a recent work Padhi et al (1995) studied the ionization of the L subshell of Au and Bi through the impact of B ions in the energy range 0.48-0.88 MeV amu −1 . Their goal was to investigate further the anomalies which have been found in previous L-shell ionization works using heavy projectile ions (Li et al 1976, Sarkadi and Mukoyama 1980, Jitschin et al 1983a, b, 1985, Pálinkás et al 1983, Berinde et al 1984, Papp et al 1984, Dexheimer et al 1986, Kambara et al 1989, Semaniak et al 1994, Dhal et al 1995a. In these works large deviations (up to one order of magnitude in some cases) were observed between the measured cross section values (subshell cross section ratios) and the predictions of the first-order ionization theories.…”

Semiempirical Approximation to Cross Sections forLX-ray Production by Proton Impact

“…Some attempts to improve sections can be overcome. the situation have been made, namely via the consider-We define empirical correction functions s s (x s ) as ation of intrashell transitions induced by the projectile 11,12 and measurement of the atomic parameters 13,14 used in V c 3 Å V 3 s 3 (x 3 ) the conversion from ionization to x-ray production cross sections and vice versa. Intrashell transitions are almost V c 2 Å V 2 s 2 (x 2 ) negligible for protons and the employment of different V c 1 Å V 1 s 1 (x 1 ).…”

Distribution ofK α L n satellite yields for mediumZ elements bombarded with16O ions

“…However, such large differences are unlikely. According to [11] for colliding system with strong perturbation there is an effective vacancy sharing mechanism between the L-subshells during the collision process. As a result, we can expect a statistical population of the vacancies in a central collision.…”