Rotation and shape changes in Tb151 and Pb196: Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis

S. Leoni, G. Benzoni, N. Blasi, A. Bracco, F. Camera, A. Corsi, F. C.L. Crespi, P. Mason, B. Million, D. Montanari, M. Pignanelli, E. Vigezzi, O. Wieland, M. Matsuo, Y. R. Shimizu, D. Curien, G. Duchêne, J. Robin, P. Bednarczyk, M. CastoldiB. Herskind, M. Kmiecik, A. Maj, W. Meczynski, J. Styczen, M. Zieblinski, K. Zuber, A. Zucchiatti

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The γ decay associated with the warm rotation of the superdeformed nuclei Tb151 and Pb196 has been measured with the Euroball IV array. Several experimental quantities are presented, putting strong constraints on the decay dynamics in the superdeformed well. The data are successfully reproduced using a Monte Carlo simulation of the γ decay based on microscopically calculated energy levels, E2 decay probabilities, collective mass parameters, and potential energy barriers between the wells associated with normal and super deformation. This allows one to test the basic ingredients of the physical process, such as the strength of the two-body residual interaction and the potential barriers as a function of spin and excitation energy. We also show that the data probe the E1 strength function, indicating an enhancement around 1-2 MeV γ rays, which might be related to octupole vibrations.

Original languageEnglish
Article number064306
JournalPhysical Review C - Nuclear Physics
Volume79
Issue number6
DOIs
Publication statusPublished - Jun 10 2009

Fingerprint

nuclear structure
nuclei
probes
decay
ingredients
rays
energy levels
potential energy
vibration
augmentation
excitation
simulation
interactions
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Rotation and shape changes in Tb151 and Pb196 : Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis. / Leoni, S.; Benzoni, G.; Blasi, N.; Bracco, A.; Camera, F.; Corsi, A.; Crespi, F. C.L.; Mason, P.; Million, B.; Montanari, D.; Pignanelli, M.; Vigezzi, E.; Wieland, O.; Matsuo, M.; Shimizu, Y. R.; Curien, D.; Duchêne, G.; Robin, J.; Bednarczyk, P.; Castoldi, M.; Herskind, B.; Kmiecik, M.; Maj, A.; Meczynski, W.; Styczen, J.; Zieblinski, M.; Zuber, K.; Zucchiatti, A.

In: Physical Review C - Nuclear Physics, Vol. 79, No. 6, 064306, 10.06.2009.

Research output: Contribution to journalArticle

Leoni, S, Benzoni, G, Blasi, N, Bracco, A, Camera, F, Corsi, A, Crespi, FCL, Mason, P, Million, B, Montanari, D, Pignanelli, M, Vigezzi, E, Wieland, O, Matsuo, M, Shimizu, YR, Curien, D, Duchêne, G, Robin, J, Bednarczyk, P, Castoldi, M, Herskind, B, Kmiecik, M, Maj, A, Meczynski, W, Styczen, J, Zieblinski, M, Zuber, K & Zucchiatti, A 2009, 'Rotation and shape changes in Tb151 and Pb196: Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis', Physical Review C - Nuclear Physics, vol. 79, no. 6, 064306. https://doi.org/10.1103/PhysRevC.79.064306
Leoni, S. ; Benzoni, G. ; Blasi, N. ; Bracco, A. ; Camera, F. ; Corsi, A. ; Crespi, F. C.L. ; Mason, P. ; Million, B. ; Montanari, D. ; Pignanelli, M. ; Vigezzi, E. ; Wieland, O. ; Matsuo, M. ; Shimizu, Y. R. ; Curien, D. ; Duchêne, G. ; Robin, J. ; Bednarczyk, P. ; Castoldi, M. ; Herskind, B. ; Kmiecik, M. ; Maj, A. ; Meczynski, W. ; Styczen, J. ; Zieblinski, M. ; Zuber, K. ; Zucchiatti, A. / Rotation and shape changes in Tb151 and Pb196 : Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis. In: Physical Review C - Nuclear Physics. 2009 ; Vol. 79, No. 6.
@article{6ea22241627046bebdf0210804d227c7,
title = "Rotation and shape changes in Tb151 and Pb196: Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis",
abstract = "The γ decay associated with the warm rotation of the superdeformed nuclei Tb151 and Pb196 has been measured with the Euroball IV array. Several experimental quantities are presented, putting strong constraints on the decay dynamics in the superdeformed well. The data are successfully reproduced using a Monte Carlo simulation of the γ decay based on microscopically calculated energy levels, E2 decay probabilities, collective mass parameters, and potential energy barriers between the wells associated with normal and super deformation. This allows one to test the basic ingredients of the physical process, such as the strength of the two-body residual interaction and the potential barriers as a function of spin and excitation energy. We also show that the data probe the E1 strength function, indicating an enhancement around 1-2 MeV γ rays, which might be related to octupole vibrations.",
author = "S. Leoni and G. Benzoni and N. Blasi and A. Bracco and F. Camera and A. Corsi and Crespi, {F. C.L.} and P. Mason and B. Million and D. Montanari and M. Pignanelli and E. Vigezzi and O. Wieland and M. Matsuo and Shimizu, {Y. R.} and D. Curien and G. Duch{\^e}ne and J. Robin and P. Bednarczyk and M. Castoldi and B. Herskind and M. Kmiecik and A. Maj and W. Meczynski and J. Styczen and M. Zieblinski and K. Zuber and A. Zucchiatti",
year = "2009",
month = "6",
day = "10",
doi = "10.1103/PhysRevC.79.064306",
language = "English",
volume = "79",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "6",

}

TY - JOUR

T1 - Rotation and shape changes in Tb151 and Pb196

T2 - Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis

AU - Leoni, S.

AU - Benzoni, G.

AU - Blasi, N.

AU - Bracco, A.

AU - Camera, F.

AU - Corsi, A.

AU - Crespi, F. C.L.

AU - Mason, P.

AU - Million, B.

AU - Montanari, D.

AU - Pignanelli, M.

AU - Vigezzi, E.

AU - Wieland, O.

AU - Matsuo, M.

AU - Shimizu, Y. R.

AU - Curien, D.

AU - Duchêne, G.

AU - Robin, J.

AU - Bednarczyk, P.

AU - Castoldi, M.

AU - Herskind, B.

AU - Kmiecik, M.

AU - Maj, A.

AU - Meczynski, W.

AU - Styczen, J.

AU - Zieblinski, M.

AU - Zuber, K.

AU - Zucchiatti, A.

PY - 2009/6/10

Y1 - 2009/6/10

N2 - The γ decay associated with the warm rotation of the superdeformed nuclei Tb151 and Pb196 has been measured with the Euroball IV array. Several experimental quantities are presented, putting strong constraints on the decay dynamics in the superdeformed well. The data are successfully reproduced using a Monte Carlo simulation of the γ decay based on microscopically calculated energy levels, E2 decay probabilities, collective mass parameters, and potential energy barriers between the wells associated with normal and super deformation. This allows one to test the basic ingredients of the physical process, such as the strength of the two-body residual interaction and the potential barriers as a function of spin and excitation energy. We also show that the data probe the E1 strength function, indicating an enhancement around 1-2 MeV γ rays, which might be related to octupole vibrations.

AB - The γ decay associated with the warm rotation of the superdeformed nuclei Tb151 and Pb196 has been measured with the Euroball IV array. Several experimental quantities are presented, putting strong constraints on the decay dynamics in the superdeformed well. The data are successfully reproduced using a Monte Carlo simulation of the γ decay based on microscopically calculated energy levels, E2 decay probabilities, collective mass parameters, and potential energy barriers between the wells associated with normal and super deformation. This allows one to test the basic ingredients of the physical process, such as the strength of the two-body residual interaction and the potential barriers as a function of spin and excitation energy. We also show that the data probe the E1 strength function, indicating an enhancement around 1-2 MeV γ rays, which might be related to octupole vibrations.

UR - http://www.scopus.com/inward/record.url?scp=67549144804&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67549144804&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.79.064306

DO - 10.1103/PhysRevC.79.064306

M3 - Article

AN - SCOPUS:67549144804

VL - 79

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 6

M1 - 064306

ER -