| | |
| | |
Stat |
Members: 3645 Articles: 2'501'711 Articles rated: 2609
20 April 2024 |
|
| | | |
|
Article overview
| |
|
Elucidation of the anomalous A = 9 isospin quartet behaviour | M. Brodeur
; T. Brunner
; S. Ettenauer
; A. Lapierre
; R. Ringle
; B. A. Brown
; D. Lunney
; J. Dilling
; | Date: |
18 Apr 2012 | Abstract: | Recent high-precision mass measurements of $^{9}$Li and $^{9}$Be, performed
with the TITAN Penning trap at the TRIUMF ISAC facility, are analyzed in light
of state-of-the-art shell model calculations. We find an explanation for the
anomalous Isobaric Mass Multiplet Equation (IMME) behaviour for the two $A$ = 9
quartets. The presence of a cubic $d$ = 6.3(17) keV term for the $J^{pi}$ =
3/2$^{-}$ quartet and the vanishing cubic term for the excited $J^{pi}$ =
1/2$^{-}$ multiplet depend upon the presence of a nearby $T$ = 1/2 state in
$^{9}$B and $^{9}$Be that induces isospin mixing. This is contrary to previous
hypotheses involving purely Coulomb and charge-dependent effects. $T$ = 1/2
states have been observed near the calculated energy, above the $T$ = 3/2
state. However an experimental confirmation of their $J^{pi}$ is needed. | Source: | arXiv, 1204.4133 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |