Warm nuclei: Nuclear structure effects on the order-to-chaos transition region

S. Leoni; G. Benzoni; N. Blasi; A. Bracco; S. Brambilla; 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; P. Bednarczyk; M. Castoldi; D. Curien; G. G. Duchêne; B. Herskind; M. Kmiecik; A. Maj; W. Meczynski; J. Robin; J. Styczen; M. Zieblinski; K. Zuber; A. Zucchiatti

Warm nuclei: Nuclear structure effects on the order-to-chaos transition region

S. Leoni, G. Benzoni, N. Blasi, A. Bracco, S. Brambilla, 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, P. Bednarczyk, M. Castoldi, D. Curien, G. G. DuchêneB. Herskind, M. Kmiecik, A. Maj, W. Meczynski, J. Robin, J. Styczen, M. Zieblinski, K. Zuber, A. Zucchiatti

Experimental Particle Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The γ-decay from the warm rotation in the transition region between order and chaos is studied in the superdeformed (SD) nuclei ¹⁵¹Tb and ¹⁹⁶Pb, using the EUROBALL IV array. A number of observables, testing the decay dynamics in the SD well, are compared with predictions from a Monte Carlo simulation of the γ-decay based on microscopic calculations of discrete levels and decay probabilities. Agreement with the data is found only assuming an enhancement of the B(E1) strength around 1 MeV by a factor of 10-100, which is consistent with the evidence for octupole vibrations in both mass regions. The work shows the relevance of γ-spectroscopy in the order-to-chaos regime to highlight specific nuclear structure effects.

Original language	English
Pages (from-to)	555
Number of pages	1
Journal	Acta Physica Polonica B
Volume	40
Issue number	3
Publication status	Published - Mar 2009

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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Leoni, S., Benzoni, G., Blasi, N., Bracco, A., Brambilla, S., 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., Bednarczyk, P., Castoldi, M., Curien, D., ... Zucchiatti, A. (2009). Warm nuclei: Nuclear structure effects on the order-to-chaos transition region. Acta Physica Polonica B, 40(3), 555.

Leoni, S, Benzoni, G, Blasi, N, Bracco, A, Brambilla, S, Camera, F, Corsi, A, Crespi, FCL, Mason, P, Million, B, Montanari, D, Pignanelli, M, Vigezzi, E, Wieland, O, Matsuo, M, Shimizu, YR, Bednarczyk, P, Castoldi, M, Curien, D, Duchêne, GG, Herskind, B, Kmiecik, M, Maj, A, Meczynski, W, Robin, J, Styczen, J, Zieblinski, M, Zuber, K & Zucchiatti, A 2009, 'Warm nuclei: Nuclear structure effects on the order-to-chaos transition region', Acta Physica Polonica B, vol. 40, no. 3, pp. 555.

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title = "Warm nuclei: Nuclear structure effects on the order-to-chaos transition region",

abstract = "The γ-decay from the warm rotation in the transition region between order and chaos is studied in the superdeformed (SD) nuclei 151Tb and 196Pb, using the EUROBALL IV array. A number of observables, testing the decay dynamics in the SD well, are compared with predictions from a Monte Carlo simulation of the γ-decay based on microscopic calculations of discrete levels and decay probabilities. Agreement with the data is found only assuming an enhancement of the B(E1) strength around 1 MeV by a factor of 10-100, which is consistent with the evidence for octupole vibrations in both mass regions. The work shows the relevance of γ-spectroscopy in the order-to-chaos regime to highlight specific nuclear structure effects.",

author = "S. Leoni and G. Benzoni and N. Blasi and A. Bracco and S. Brambilla 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 P. Bednarczyk and M. Castoldi and D. Curien and Duch{\^e}ne, {G. G.} and B. Herskind and M. Kmiecik and A. Maj and W. Meczynski and J. Robin and J. Styczen and M. Zieblinski and K. Zuber and A. Zucchiatti",

year = "2009",

month = mar,

language = "English",

volume = "40",

pages = "555",

journal = "Acta Physica Polonica B",

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TY - JOUR

T1 - Warm nuclei

T2 - Nuclear structure effects on the order-to-chaos transition region

AU - Leoni, S.

AU - Benzoni, G.

AU - Blasi, N.

AU - Bracco, A.

AU - Brambilla, S.

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 - Bednarczyk, P.

AU - Castoldi, M.

AU - Curien, D.

AU - Duchêne, G. G.

AU - Herskind, B.

AU - Kmiecik, M.

AU - Maj, A.

AU - Meczynski, W.

AU - Robin, J.

AU - Styczen, J.

AU - Zieblinski, M.

AU - Zuber, K.

AU - Zucchiatti, A.

PY - 2009/3

Y1 - 2009/3

N2 - The γ-decay from the warm rotation in the transition region between order and chaos is studied in the superdeformed (SD) nuclei 151Tb and 196Pb, using the EUROBALL IV array. A number of observables, testing the decay dynamics in the SD well, are compared with predictions from a Monte Carlo simulation of the γ-decay based on microscopic calculations of discrete levels and decay probabilities. Agreement with the data is found only assuming an enhancement of the B(E1) strength around 1 MeV by a factor of 10-100, which is consistent with the evidence for octupole vibrations in both mass regions. The work shows the relevance of γ-spectroscopy in the order-to-chaos regime to highlight specific nuclear structure effects.

AB - The γ-decay from the warm rotation in the transition region between order and chaos is studied in the superdeformed (SD) nuclei 151Tb and 196Pb, using the EUROBALL IV array. A number of observables, testing the decay dynamics in the SD well, are compared with predictions from a Monte Carlo simulation of the γ-decay based on microscopic calculations of discrete levels and decay probabilities. Agreement with the data is found only assuming an enhancement of the B(E1) strength around 1 MeV by a factor of 10-100, which is consistent with the evidence for octupole vibrations in both mass regions. The work shows the relevance of γ-spectroscopy in the order-to-chaos regime to highlight specific nuclear structure effects.

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AN - SCOPUS:62549137395

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JO - Acta Physica Polonica B

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ER -

Warm nuclei: Nuclear structure effects on the order-to-chaos transition region

Abstract

All Science Journal Classification (ASJC) codes

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