Atomic charge exchange between semi-relativistic helium ions and targets from carbon to lead

R. Meharchand, H. Akimune, A. M. Van Den Berg, Y. Fujita, M. Fujiwara, S. Galés, M. N. Harakeh, H. Hashimoto, R. Hayami, G. W. Hitt, M. Itoh, T. Kawabata, K. Kawase, M. Kinoshita, K. Nakanishi, S. Nakayama, S. Okumura, Y. Shimbara, M. Uchida, T. YamagataM. Yosoi, R. G.T. Zegers

Research output: Contribution to journalConference articlepeer-review


In (3He,t) nuclear charge-exchange reactions, 3He+ charge states are produced as a result of atomic charge-exchange between 3He++ ions and atoms in the target. In equilibrium, the atomic charge-exchange process consists of both electron ionization (stripping), and electron capture, which can proceed through Radiative Electron Capture (REC) or Non-Radiative Electron Capture (NREC). Unfortunately, a complete description of the atomic charge-exchange process is lacking. As a result, a largely phenomenological approach has been used, which has not been tested for high beam energies. In this work, ratios of equilibrium charge-state yields for singly to doubly ionized 3He ions were measured using the Grand Raiden Spectrometer at the Research Center for Nuclear Physics (RCNP). A semi-phenomenological approach used when calculating atomic electron capture and stripping cross sections is successful in describing the data for beam energies of E(3He) = 420 MeV.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - 2008
Event10th Symposium on Nuclei in the Cosmos, NIC 2008 - Mackinac Island, MI, United States
Duration: 2008 Jul 272008 Aug 1


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