CHARGE STATE DISTRIBUTIONS OF SWIFT HEAVY IONS BEHIND VARIOUS SOLID TARGETS (36 ≤Zp≤ 92, 18 MeV/u ≤E≤ 44 MeV/u)
✍ Scribed by A LEON; S MELKI; D LISFI; J.P GRANDIN; P JARDIN; M.G SURAUD; A CASSIMI
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 443 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0092-640X
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✦ Synopsis
Noting the lack of and the increasing need for information concerning heavy ion stripping in the intermediate velocity regime, we have studied a large number of ion-target systems experimentally. We present experimental charge state distributions obtained at the GANIL accelerator for several projectiles (36 Յ Z p Յ 92) with energies ranging from 18 MeV/u to 44 MeV/u, emerging from various target foils (4 Յ Z t Յ 79) of natural isotopic composition. The target thicknesses (from 1 g/cm 2 up to several mg/cm 2 ) are chosen to cover the pre-and post-charge-state equilibrium regimes. Charge state fractions, mean charge state, charge distribution width, and emerging ion energy are tabulated for each of the 107 projectile-target element-target thickness combinations. We also present an improvement of the semi-empirical formulae proposed by Baron et al. to predict the mean charge states and the distribution widths at equilibrium. These formulae are compared with the available experimental data.