Experimental identification of spin-parities and single-particle configurations in No257 and its α-decay daughter Fm253

M. Asai, K. Tsukada, M. Sakama, S. Ichikawa, T. Ishii, Y. Nagame, I. Nishinaka, K. Akiyama, A. Osa, Y. Oura, K. Sueki, M. Shibata

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

α-γ and α-electron coincidence spectroscopy for a short-lived heavy actinide nucleus No257 (T1/2=24.5s) has been performed using a gas-jet transport system and an on-line isotope separator. Spin-parities of excited states in Fm253 fed by the α decay of No257 have been identified on the basis of the measured internal conversion coefficients. The ν3/2+[622] configuration has been assigned to the ground state of No257 as well as to the 124.1 keV level in Fm253. It was found that the ground-state configuration of No257 is different from that of lighter N=155 isotones.

Original languageEnglish
Article number102502
JournalPhysical Review Letters
Volume95
Issue number10
DOIs
Publication statusPublished - Sep 2 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Experimental identification of spin-parities and single-particle configurations in No257 and its α-decay daughter Fm253'. Together they form a unique fingerprint.

Cite this