Journal article

Publication year: 2006

Pages: 153-163

Journal: Hyperfine Interactions

Volume number: 173

Issue number: 1-3

ISSN: 0304-3843

eISSN: 1572-9540

DOI Link: https://doi.org/10.1007/s10751-007-9552-1

Publisher: Springer

Abstract: 
A next-generation slow radioactive nuclear ion beam facility (SLOWRI) which provides slow, high-purity and small emittance ion beams of all elements is being build as one of the principal facilities at the RIKEN RI-beam factory (RIBF). High energy radioactive ion beams from the projectile fragment separator BigRIPS are thermalized in a large gas catcher cell. The thermalized ions in the gas cell are guided and extracted to a vacuum environment by a combination of dc electric fields and inhomogeneous rf fields (rf carpet ion guide). From there the slow ion beam is delivered via a mass separator and a switchyard to various devices: such as an ion trap, a collinear fast beam apparatus, and a multi-reflection time of flight mass spectrometer. In the R&D works at the present RIKEN facility, an overall efficiency of 5% for a 100A MeV Li-8 ion beam from the present projectile fragment separator RIPS was achieved and the dependence of the efficiency on the ion beam intensity was investigated. Recently our first spectroscopy experiment at the prototype SLOWI was performed on Be isotopes. Energetic ions of Be-10 and Be-7 from the RIPS were trapped and laser cooled in a linear rf trap and the specific mass shifts of these isotopes were measured for the first time.

Harvard Citation style: Wada, M., Ishida, Y., Nakamura, T., Kanai, Y., Kojima, T., Takamine, A., et al. (2006) Laser spectroscopy of trapped ⁷Be and ¹⁰Be at a prototype slow RI-beam facility of RIKEN, Hyperfine Interactions, 173(1-3), pp. 153-163. https://doi.org/10.1007/s10751-007-9552-1

APA Citation style: Wada, M., Ishida, Y., Nakamura, T., Kanai, Y., Kojima, T., Takamine, A., Yamazaki, Y., Okada, K., Yoshida, A., Kubo, T., Katayama, I., Ohtani, S., Varentsov, V., Wollnik, H., Lioubimov, V., & Schuessler, H. (2006). Laser spectroscopy of trapped ⁷Be and ¹⁰Be at a prototype slow RI-beam facility of RIKEN. Hyperfine Interactions. 173(1-3), 153-163. https://doi.org/10.1007/s10751-007-9552-1