English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

High-precision mass measurements of nickel, copper, and gallium isotopes and the purported shell closure at N = 40

MPS-Authors
/persons/resource/persons30312

Blaum,  K.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30661

Kellerbauer,  A.
Alban Kellerbauer - Emmy Noether Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Guénot, C., Audi, G., Beck, D., Blaum, K., Bollen, G., Delahaye, P., et al. (2007). High-precision mass measurements of nickel, copper, and gallium isotopes and the purported shell closure at N = 40. Physical Review C, 75: 044303, pp. 1-12. doi:10.1103/PhysRevC.75.044303.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7D80-4
Abstract
High-precision mass measurements of more than 30 neutron-rich nuclides around the Z = 28 closed proton shell were performed with the triple-trap mass spectrometer ISOLTRAPat ISOLDE/CERN to address the question of a possible neutron shell closure at N = 40. The results for 57,60,64−69Ni (Z = 28), 65−74,76Cu (Z = 29), and 63−65,68−78Ga (Z = 31) have a relative uncertainty of the order of 10−8. In particular, the mass of 76Cu was measured for the first time. We analyze the resulting mass surface for signs of magicity, comparing the behavior of N = 40 with that of known magic numbers and with midshell behavior. While the classic indications from the mass surface show no evidence for a shell closure at N = 40, there is evidence for a weak—and very localized—effect for Z = 28, consistent with findings from nuclear spectroscopy studies.