TY - JOUR
T1 - Control of stopping position of radioactive ion beam in superfluid helium for laser spectroscopy experiments
AU - Yang, X. F.
AU - Furukawa, T.
AU - Wakui, T.
AU - Imamura, K.
AU - Tetsuka, H.
AU - Fujita, T.
AU - Yamaguchi, Y.
AU - Tsutsui, Y.
AU - Mitsuya, Y.
AU - Ichikawa, Y.
AU - Ishibashi, Y.
AU - Yoshida, N.
AU - Shirai, H.
AU - Ebara, Y.
AU - Hayasaka, M.
AU - Arai, S.
AU - Muramoto, S.
AU - Hatakeyama, A.
AU - Wada, M.
AU - Sonoda, T.
AU - Ito, Y.
AU - Kobayashi, T.
AU - Nishimura, S.
AU - Nishimura, M.
AU - Kondo, Y.
AU - Yoneda, K.
AU - Ueno, H.
AU - Shinozuka, T.
AU - Shimoda, T.
AU - Asahi, K.
AU - Matsuo, Y.
PY - 2013/12/15
Y1 - 2013/12/15
N2 - In order to investigate the structure of exotic nuclei with extremely low yields by measuring nuclear spins and moments, a new laser spectroscopy technique - "OROCHI" (Optical Radioisotopes Observation in Condensed Helium as Ion-catcher) has been proposed in recent years. The feasibility of this technique has been demonstrated by means of a considerable amount of offline and online studies of various atoms in superfluid helium. For in-situ laser spectroscopy of atoms in He II, trapping atoms in the observation region of laser is a key step. Therefore, a method which enables us to trap accelerated atoms at a precise position in He II is highly needed for performing experiment. In this work, a technique making use of a degrader, two plastic scintillators and a photon detection system is established for checking the stopping position of beam based on the LISE++ calculation. The method has been tested and verified by on-line experiments with the 84,85,87Rb beam. Details of the experimental setup, working procedure and testing results of this method are presented.
AB - In order to investigate the structure of exotic nuclei with extremely low yields by measuring nuclear spins and moments, a new laser spectroscopy technique - "OROCHI" (Optical Radioisotopes Observation in Condensed Helium as Ion-catcher) has been proposed in recent years. The feasibility of this technique has been demonstrated by means of a considerable amount of offline and online studies of various atoms in superfluid helium. For in-situ laser spectroscopy of atoms in He II, trapping atoms in the observation region of laser is a key step. Therefore, a method which enables us to trap accelerated atoms at a precise position in He II is highly needed for performing experiment. In this work, a technique making use of a degrader, two plastic scintillators and a photon detection system is established for checking the stopping position of beam based on the LISE++ calculation. The method has been tested and verified by on-line experiments with the 84,85,87Rb beam. Details of the experimental setup, working procedure and testing results of this method are presented.
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U2 - 10.1016/j.nimb.2013.07.068
DO - 10.1016/j.nimb.2013.07.068
M3 - Article
AN - SCOPUS:84890119550
SN - 0168-583X
VL - 317
SP - 599
EP - 602
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - PART B
ER -