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Reorientation-effect measurement of the 〈21+∥E2∥1+〉 matrix element in 10Be

Författare och institution:
J. N. Orce (-); T. E. Drake (-); M. K. Djongolov (-); P. Navratil (-); S. Triambak (-); G. C. Ball (-); H. Al Falou (-); R. Churchman (-); D. S. Cross (-); P. Finlay (-); Christian Forssén (Institutionen för fundamental fysik); A. B. Garnsworthy (-); P. E. Garrett (-); G. Hackman (-); A. B. Hayes (-); R. Kshetri (-); J. Lassen (-); K. G. Leach (-); R. Li (-); J. Meissner (-); C. J. Pearson (-); E. T. Rand (-); F. Sarazin (-); S. K. L. Sjue (-); M. A. Stoyer (-); C. S. Sumithrarachchi (-); C. E. Svensson (-); E. R. Tardiff (-); A. Teigelhoefer (-); S. J. Williams (-); J. Wong (-); C. Y. Wu (-)
Publicerad i:
Physical Review C, 86 ( 4 )
ISSN:
0556-2813
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2012
Språk:
engelska
Fulltextlänk:
Fulltextlänk (lokalt arkiv):
Sammanfattning (abstract):
The highly-efficient and segmented TIGRESS gamma-ray spectrometer at TRIUMF has been used to perform a reorientation-effect Coulomb-excitation study of the 2(1)(+) state at 3.368 MeV in Be-10. This is the first Coulomb-excitation measurement that enables one to obtain information on diagonal matrix elements for such a high-lying first excited state from gamma-ray data. With the availability of accurate lifetime data, a value of -0.110 +/- 0.087 eb is determined for the < 2(1)(+)parallel to(E) over cap2 parallel to 2(1)(+)> diagonal matrix element, which assuming the rotor model, leads to a negative spectroscopic quadrupole moment of Q(S)(2(1)(+)) = -0.083 +/- 0.066 eb. This result is in agreement with both no-core shell-model calculations performed in this work with the CD-Bonn 2000 two-nucleon potential and large shell-model spaces, and Green's function Monte Carlo predictions with two-plus three-nucleon potentials.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Fysik
NATURVETENSKAP ->
Fysik ->
Subatomär fysik ->
Kärnfysik ->
Lågenergifysik
Nyckelord:
coulomb-excitation, clover detector, nuclei, tigress, moments, triumf, shell, li-7
Chalmers fundament:
Grundläggande vetenskaper
Chalmers forskningsinfrastruktur:
C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)
Postens nummer:
166274
Posten skapad:
2012-11-16 15:48
Posten ändrad:
2012-11-16 15:55

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