TY - JOUR
T1 - Laser-radio-frequency double-resonance spectroscopy of 84-87Rb isotopes trapped in superfluid helium
AU - Yang, Xiaofei
AU - Furukawa, Takeshi
AU - Wakui, Takashi
AU - Fujita, Tomomi
AU - Imamura, Kei
AU - Mitsuya, Yosuke
AU - Hayasaka, Miki
AU - Ichikawa, Yuichi
AU - Ishibashi, Yoko
AU - Shirai, Hazuki
AU - Suzuki, Takahiro
AU - Ebara, Yuta
AU - Hatakeyama, Atsushi
AU - Wada, Michiharu
AU - Sonoda, Tetsu
AU - Ito, Yuta
AU - Kobayashi, Tohru
AU - Nishimura, Shunji
AU - Kurata-Nishimura, Mizuki
AU - Kondo, Yosuke
AU - Yoneda, Ken Ichiro
AU - Kubono, Shigeru
AU - Ohshiro, Yoshimitsu
AU - Ueno, Hideki
AU - Shinozuka, Tsutomu
AU - Shimoda, Tadashi
AU - Asahi, Koichiro
AU - Matsuo, Yukari
PY - 2014/11/19
Y1 - 2014/11/19
N2 - In this paper, we report on a laser spectroscopy measurement of 84-87Rb isotopes in superfluid helium (He ii) at 1.8 K using laser-radio-frequency double-resonance spectroscopy. Rb ion beams (>60 MeV/u) provided by the RIKEN projectile fragment separator (RIPS) were injected and trapped into He ii. The stopping position of atoms in He ii was precisely confirmed by laser spectroscopy. By optically pumping the trapped Rb isotopes, large atomic spin polarization (up to 40%) of each observed isotope in the ground state was achieved. The laser-radio-frequency double-resonance spectra were observed for stable 85,87Rb isotopes as well as for unstable isotopes 84,84m,86Rb by scanning a weak magnetic field with a fixed-frequency RF field. From the measured Zeeman splitting, nuclear spin values for 84m,84-87Rb isotopes were determined with reasonable accuracy. The number of ions injected into He ii for the resonance spectra measurement was on the order of 104 particles per second. This work may open new opportunities for the study of various particles trapped in condensed helium in several fields.
AB - In this paper, we report on a laser spectroscopy measurement of 84-87Rb isotopes in superfluid helium (He ii) at 1.8 K using laser-radio-frequency double-resonance spectroscopy. Rb ion beams (>60 MeV/u) provided by the RIKEN projectile fragment separator (RIPS) were injected and trapped into He ii. The stopping position of atoms in He ii was precisely confirmed by laser spectroscopy. By optically pumping the trapped Rb isotopes, large atomic spin polarization (up to 40%) of each observed isotope in the ground state was achieved. The laser-radio-frequency double-resonance spectra were observed for stable 85,87Rb isotopes as well as for unstable isotopes 84,84m,86Rb by scanning a weak magnetic field with a fixed-frequency RF field. From the measured Zeeman splitting, nuclear spin values for 84m,84-87Rb isotopes were determined with reasonable accuracy. The number of ions injected into He ii for the resonance spectra measurement was on the order of 104 particles per second. This work may open new opportunities for the study of various particles trapped in condensed helium in several fields.
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U2 - 10.1103/PhysRevA.90.052516
DO - 10.1103/PhysRevA.90.052516
M3 - Article
AN - SCOPUS:84915748227
VL - 90
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 5
M1 - 052516
ER -