skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on February 2, 2019

Title: Prompt and delayed spectroscopy of At 203 : Observation of a shears band and a 29 / 2 + isomeric state

Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of 203At(N=118) significantly. We have observed an isomeric [τ=14.1(3)μs] state with a spin and parity of 29/2 +. The isomeric state is suggested to originate from the π(h 9/2)Ⓧ|| 202Po;11 > coupling, and it is depopulated through 286 keV E2 and 366 keV E3 transitions. Additionally, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [4] ;  [2] ;  [2] ;  [2] ;  [2] ;  [5] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] more »;  [2] ;  [2] ;  [2] ;  [6] ;  [2] ;  [7] « less
  1. Univ. of Jyvaskyla, Jyvaskyla (Finland); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Jyvaskyla, Jyvaskyla (Finland)
  3. Univ. of Jyvaskyla, Jyvaskyla (Finland); Univ. of Liverpool, Liverpool (United Kingdom)
  4. Royal Institute of Technology, Stockholm (Sweden); Univ. of Helsinki (Finland)
  5. Univ. of Manchester, Manchester (United Kingdom)
  6. Univ. of Jyvaskyla, Jyvaskyla (Finland); Univ. of Oulu, Sodankyla (Finland)
  7. Peking Univ., Beijing (China)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
European Commission, Community Research and Development Information Service (CORDIS), Seventh Framework Programme (FP7); United Kingdom Science and Technology Facilities Council; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1426226
Alternate Identifier(s):
OSTI ID: 1419366