Montenegro EC, Shah MB, Luna H, Scully SWJ, de Barros ALF, Wyer JA, Lecointre J. Water fragmentation and energy loss by carbon ions at the distal region of the Bragg peak.
PHYSICAL REVIEW LETTERS 2007;
99:213201. [PMID:
18233216 DOI:
10.1103/physrevlett.99.213201]
[Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Indexed: 05/25/2023]
Abstract
Time-of-flight mass spectrometry was used to investigate fragmentation and energy transfer processes in water by C ions at the distal part of the Bragg peak. Measurements of the positive ion fragments from ionization, electron capture, electron loss, transfer-loss and loss-ionization channels have allowed us for the first time (a) to obtain a quantitative determination of the energy lost by C ions in water and (b) to show that total water fragment ion production has a much flatter profile with projectile energy than would be expected if the water radical formation was assumed to follow the energy-loss profile obtained from available stopping power models.
Collapse