Probing electron captures on 56 Ni: A new technique to extract Gamow-Teller strengths of unstable nuclei.

G. Perdikakis; M. Sasano; R. G.T. Zegers; Sam M. Austin; D. Bazin; B. A. Brown; C. Caesar; A. L. Cole; J. M. Deaven; N. Ferrante; C. J. Guess; G. W. Hitt; R. Meharchand; F. Montes; J. Palardy; A. Prinke; L. A. Riley; H. Sakai; M. Scott; A. Stolz; L. Valdez; K. Yako

Probing electron captures on ⁵⁶ Ni: A new technique to extract Gamow-Teller strengths of unstable nuclei.

G. Perdikakis, M. Sasano, R. G.T. Zegers, Sam M. Austin, D. Bazin, B. A. Brown, C. Caesar, A. L. Cole, J. M. Deaven, N. Ferrante, C. J. Guess, G. W. Hitt, R. Meharchand, F. Montes, J. Palardy, A. Prinke, L. A. Riley, H. Sakai, M. Scott, A. StolzL. Valdez, K. Yako

Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Electron captures on iron-group nuclei near ⁵⁶Ni play an important role in the evolution of type Ia and type II supernovae. A new technique that allows the study of Gamow-Teller (GT) strengths from unstable nuclei has been developed at NSCL and used to probe the GT response of ⁵⁶Ni. The ⁵⁶Ni(p,n)⁵⁶Cu charge-exchange reaction at 110MeV/u was employed to extract GT strengths from ⁵⁶Ni for the first time. Because of isospin symmetry, the extracted strength distribution is also valid for the ⁵⁶Ni → ⁵⁶Co electron-capture direction, which is most important for astrophysical applications. The results were compared with shell-model theory employing two modern interactions, GXPF1A/J and KB3G. The calculation with the GXPF1A/J interaction provides a better match to the experimental results. Besides the results for ⁵⁶Ni, newly extracted Gamow-Teller strengths from the ⁵⁵Co(p,n) reaction are presented.

Original language	English
Journal	Proceedings of Science
State	Published - 2012
Event	12th International Symposium on Nuclei in the Cosmos, NIC 2012 - Cairns, QLD, Australia Duration: Aug 5 2012 → Aug 12 2012

Cite this

Perdikakis, G., Sasano, M., Zegers, R. G. T., Austin, S. M., Bazin, D., Brown, B. A., Caesar, C., Cole, A. L., Deaven, J. M., Ferrante, N., Guess, C. J., Hitt, G. W., Meharchand, R., Montes, F., Palardy, J., Prinke, A., Riley, L. A., Sakai, H., Scott, M., ... Yako, K. (2012). Probing electron captures on ⁵⁶ Ni: A new technique to extract Gamow-Teller strengths of unstable nuclei. Proceedings of Science.

@article{ceb77564adc147d6a39cf461c930fd87,

title = "Probing electron captures on 56 Ni: A new technique to extract Gamow-Teller strengths of unstable nuclei.",

abstract = "Electron captures on iron-group nuclei near 56Ni play an important role in the evolution of type Ia and type II supernovae. A new technique that allows the study of Gamow-Teller (GT) strengths from unstable nuclei has been developed at NSCL and used to probe the GT response of 56Ni. The 56Ni(p,n)56Cu charge-exchange reaction at 110MeV/u was employed to extract GT strengths from 56Ni for the first time. Because of isospin symmetry, the extracted strength distribution is also valid for the 56Ni → 56Co electron-capture direction, which is most important for astrophysical applications. The results were compared with shell-model theory employing two modern interactions, GXPF1A/J and KB3G. The calculation with the GXPF1A/J interaction provides a better match to the experimental results. Besides the results for 56Ni, newly extracted Gamow-Teller strengths from the 55Co(p,n) reaction are presented.",

author = "G. Perdikakis and M. Sasano and Zegers, {R. G.T.} and Austin, {Sam M.} and D. Bazin and Brown, {B. A.} and C. Caesar and Cole, {A. L.} and Deaven, {J. M.} and N. Ferrante and Guess, {C. J.} and Hitt, {G. W.} and R. Meharchand and F. Montes and J. Palardy and A. Prinke and Riley, {L. A.} and H. Sakai and M. Scott and A. Stolz and L. Valdez and K. Yako",

year = "2012",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

note = "12th International Symposium on Nuclei in the Cosmos, NIC 2012 ; Conference date: 05-08-2012 Through 12-08-2012",

}

Perdikakis, G, Sasano, M, Zegers, RGT, Austin, SM, Bazin, D, Brown, BA, Caesar, C, Cole, AL, Deaven, JM, Ferrante, N, Guess, CJ, Hitt, GW, Meharchand, R, Montes, F, Palardy, J, Prinke, A, Riley, LA, Sakai, H, Scott, M, Stolz, A, Valdez, L & Yako, K 2012, 'Probing electron captures on ⁵⁶ Ni: A new technique to extract Gamow-Teller strengths of unstable nuclei.', Proceedings of Science.

TY - JOUR

T1 - Probing electron captures on 56 Ni

T2 - 12th International Symposium on Nuclei in the Cosmos, NIC 2012

AU - Perdikakis, G.

AU - Sasano, M.

AU - Zegers, R. G.T.

AU - Austin, Sam M.

AU - Bazin, D.

AU - Brown, B. A.

AU - Caesar, C.

AU - Cole, A. L.

AU - Deaven, J. M.

AU - Ferrante, N.

AU - Guess, C. J.

AU - Hitt, G. W.

AU - Meharchand, R.

AU - Montes, F.

AU - Palardy, J.

AU - Prinke, A.

AU - Riley, L. A.

AU - Sakai, H.

AU - Scott, M.

AU - Stolz, A.

AU - Valdez, L.

AU - Yako, K.

PY - 2012

Y1 - 2012

N2 - Electron captures on iron-group nuclei near 56Ni play an important role in the evolution of type Ia and type II supernovae. A new technique that allows the study of Gamow-Teller (GT) strengths from unstable nuclei has been developed at NSCL and used to probe the GT response of 56Ni. The 56Ni(p,n)56Cu charge-exchange reaction at 110MeV/u was employed to extract GT strengths from 56Ni for the first time. Because of isospin symmetry, the extracted strength distribution is also valid for the 56Ni → 56Co electron-capture direction, which is most important for astrophysical applications. The results were compared with shell-model theory employing two modern interactions, GXPF1A/J and KB3G. The calculation with the GXPF1A/J interaction provides a better match to the experimental results. Besides the results for 56Ni, newly extracted Gamow-Teller strengths from the 55Co(p,n) reaction are presented.

AB - Electron captures on iron-group nuclei near 56Ni play an important role in the evolution of type Ia and type II supernovae. A new technique that allows the study of Gamow-Teller (GT) strengths from unstable nuclei has been developed at NSCL and used to probe the GT response of 56Ni. The 56Ni(p,n)56Cu charge-exchange reaction at 110MeV/u was employed to extract GT strengths from 56Ni for the first time. Because of isospin symmetry, the extracted strength distribution is also valid for the 56Ni → 56Co electron-capture direction, which is most important for astrophysical applications. The results were compared with shell-model theory employing two modern interactions, GXPF1A/J and KB3G. The calculation with the GXPF1A/J interaction provides a better match to the experimental results. Besides the results for 56Ni, newly extracted Gamow-Teller strengths from the 55Co(p,n) reaction are presented.

UR - http://www.scopus.com/inward/record.url?scp=84887419255&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:84887419255

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

Y2 - 5 August 2012 through 12 August 2012

ER -

Probing electron captures on ⁵⁶ Ni: A new technique to extract Gamow-Teller strengths of unstable nuclei.

Abstract

Other files and links

Fingerprint

Cite this