Study on charge exchange gases in tandem accelerators for cluster ion acceleration

Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa

Charge exchange cross section $_{p}$ and destruction cross section $_{d}$ for cluster ions (C $_{n}$ : n=2, 4, 8, 10) colliding with gas targets (He, Ne, N $_{2}$ , Xe) in MeV energy were measured to select a suitable charge exchange gas for tandem accelerators. It was revealed that each $_{d}$ for C $_{n}$ was proportional to the number of atoms in a cluster ion and dependent on the atomic size of the gas. Furthermore, the destruction cross section $_{d}$ for each C $_{n}$ against helium gas is the smallest among those of the gas targets, whereas the charge exchange cross section $_{p}$ does not seem to be significantly dependent on the cluster size and the atomic size of the gas. The helium gas should be suitable for cluster ion acceleration, because a charge exchange gas should have a smaller $_{d}$ and a larger $_{p}$ .

Language	:	English
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Meeting title	:	8th International Symposium on Swift Heavy Ions in Matter (SHIM 2012)
Held date	:	2012/10
Location (city)	:	Kyoto
Location (country)	:	Japan
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Keywords	:	no keyword
Research Facility	:	TIARA(イオン照射研究施設)
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Registration No. : BB20122130
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