Abstract
Excitation energy spectra of 89ΛY, 51ΛV, and 12ΛC have been measured via the (π+, K+) reaction by using the SKS spectrometer at the K6 beam line in the KEK 12-GeV Proton Synchrotron. In the 89ΛY spectrum, obtained with an energy resolution of 1.65 MeV (FWHM) and in the highest statistics so far, we have succeeded in clearly observing a characteristic fine structure in heavy Λ hypernuclear systems and precisely obtaining a series of Λ single-particle energies in the very wide excitation energy range of more than 20 MeV, for the first time. Also in the 51ΛV spectrum, a similar structure to that of 89ΛY was observed. In the 12ΛC spectrum, new core-excited states were clearly resolved thanks to the best energy resolution of 1.45 MeV so far achieved by using the SKS spectrometer.
Original language | English |
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Article number | 044302 |
Pages (from-to) | 443021-4430215 |
Number of pages | 3987195 |
Journal | Physical Review C - Nuclear Physics |
Volume | 64 |
Issue number | 4 |
Publication status | Published - 2001 Oct |
ASJC Scopus subject areas
- Nuclear and High Energy Physics