Petri, M., Paschalis, S., Clark, R. M., Fallon, P., Macchiavelli, A. O., Starosta, K., Baugher, T., Bazin, D., Cartegni, L., Crawford, H. L., Cromaz, M., Pramanik, U. Datta, de Angelis, G., Dewald, A., Gade, A., Grinyer, G. F., Gros, S., Hackstein, M., Jeppesen, H. B., Lee, I. Y., McDaniel, S., Miller, D., Rajabali, M. M., Ratkiewicz, A., Rother, W., Voss, P., Walsh, K. A., Weisshaar, D., Wiedeking, M., Brown, B. A., Forssen, C., Navratil, P. and Roth, R. (2012). Structure of C-16: Testing shell model and ab initio approaches. Phys. Rev. C, 86 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

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Abstract

Excited states in C-16 were populated via the Be-9(N-17,C-16+gamma)X one-proton knockout reaction. The lifetime of the 2(1)(+) state in C-16 was measured using the recoil distance method. The extracted lifetime of tau(+)(21) = 11.4(-0.9)(+0.8)(stat) +/- 0.7(syst(B rho))(-1.5)(+0.0)(syst(feeding)) ps yields a deduced B(E2;2(1)(+) -> 0(1)(+)) = 4.21(-0.26)(+0.34)(stat)(-0.24)(+0.28)(syst(B rho))(-0.00)(+0.64)(syst(feeding)) e(2)fm(4) value in good agreement with a previous measurement. The one-proton knockout cross section is used to extract the proton amplitude of the C-16 2(1)(+) state, which confirms the neutron dominant character of this state. Gamma-ray branching ratios between the 2(2)(+) state and the 2(1)(+) and ground states were also determined. The results are compared with p-sd shell model and no-core shell model (with NN and NN + NNN) calculations. The inclusion of three-body forces are essential in order for the no-core shell model calculations to reproduce the experimental findings on the gamma-ray branching ratios.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Petri, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paschalis, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clark, R. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fallon, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Macchiavelli, A. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Starosta, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baugher, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bazin, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cartegni, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crawford, H. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cromaz, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pramanik, U. DattaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Angelis, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dewald, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gade, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grinyer, G. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gros, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hackstein, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jeppesen, H. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lee, I. Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McDaniel, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Miller, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rajabali, M. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ratkiewicz, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rother, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Voss, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Walsh, K. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weisshaar, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wiedeking, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brown, B. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Forssen, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Navratil, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roth, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-480918
DOI: 10.1103/PhysRevC.86.044329
Journal or Publication Title: Phys. Rev. C
Volume: 86
Number: 4
Date: 2012
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1089-490X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
LIFETIME MEASUREMENTS; TOOLMultiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/48091

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