Phys. Rev. Lett. 85, 2725–2728 (2000)Drastic Enhancement of Energy-Loss Straggling of Relativistic Heavy Ions due to Charge-State FluctuationsReceived 11 January 2000; revised 9 June 2000; published in the issue dated 25 September 2000 Stopping power and energy-loss straggling of 197Au, 208Pb, and 209Bi projectiles have been measured in different solids (4≤Z2≤82) in the energy range (100–1000)MeV/u. The experimental results clearly demonstrate the influence of the different charge states of the ions. Because of charge-state fluctuations the energy-loss straggling 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. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.2725
DOI:
10.1103/PhysRevLett.85.2725
PACS:
34.50.Bw
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