Drastic enhancement of energy-loss straggling of relativistic heavy ions due to charge-state fluctuations

Weick, H Geissel, H Scheidenberger, C Attallah, F Cortina, D Hausmann, M Munzenberg, G Radon, T Schatz, H Schmidt, K Stadlmann, J Summerer, K Winkler, M

H. Weick et al., Drastic enhancement of energy-loss straggling of relativistic heavy ions due to charge-state fluctuations, PHYS REV L, 85(13), 2000, pp. 2725-2728

29

INGLESE

Article

Physics

PHYSICAL REVIEW LETTERS

0031-9007 → ACNP

85

13

2000

2725 - 2728

ISI

0031-9007(20000925)85:13<2725:DEOESO>2.0.ZU;2-Q

Stopping power and energy-loss straggling of Au-197, Pb-208, and Bi-209 pro jectiles have been measured in different solids (4 less than or equal to Z( 2) less than or equal to 82) in the energy range (100-1000) MeV/u. The expe rimental results clearly demonstrate the influence of the different charge states of the ions. Because of charge-state fluctuations the energy-loss st raggling is up to 7 times larger than the pure collisional straggling. The selected energy domain in combination with the heavy projectiles allows for the first time an unambiguous interpretation of the long-standing problem of charge-changing collisions in energy-loss straggling.