Universität zu Köln

Fernandez, A., Jungclaus, A., Golubev, P., Rudolph, D., Sarmiento, L. G., Gargano, A., Naidja, H., Astier, A., Dupont, E., Gadea, A., Nacher, E., Perea, A., Wimmer, K., Clement, E., Fremont, G., Goupil, J., Houarner, C., Jacquot, B., Korichi, A., Lemasson, A., Li, H. J., Ljungvall, J., Menager, L., Perez-Vidal, R. M., Petrache, C. M., Ralet, D., Ropert, J. A., Saillant, F., Samark-Roth, A., Simpson, G. S., Spitaels, C., Zielinska, M., Ansari, S., Dudouet, J., Illana, A., Jurado, M., Kocheva, D., Lorenz, Ch, Quintana, B., Rainovski, G., Redon, N., Tocabens, G., Barrientos, D., Benzoni, G., Birkenbach, B., Boston, A. J., Boston, H. C., Bracco, A., Ciemala, M., Collado, J., Cullen, D. M., Domingo-Pardo, C., Eberth, J., Gonzalez, V, Harkness-Brennan, L. J., Hess, H., Judson, D. S., Korten, W., Leoni, S., Maj, A., Menegazzo, R., Mengoni, D., Michelagnoli, C., Million, B., Napoli, D. R., Nyberg, J., Podolyak, Zs, Pullia, A., Reiter, P., Sanchis, E., Stezowski, O., Theisen, Ch and Valiente-Dobon, J. J. (2021). Reinterpretation of excited states in Po-212: Shell-model multiplets rather than alpha-cluster states. Phys. Rev. C, 104 (5). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

A gamma-ray spectroscopic study of Po-212 was performed at the Grand Accelerateur National d'Ions Lourds, using the inverse kinematics alpha-transfer reaction C-12(Pb-208, Po-212) Be-8 and the AGATA spectrometer. A careful analysis based on gamma gamma coincidence relations allowed us to establish 14 new excited states in the energy range between 1.9 and 3.3 MeV. None of these states, however, can be considered as candidates for the levels with spins and parities of 1(-) and 2(-) and excitation energies below 2.1 MeV, which have been predicted by recent alpha-cluster model calculations. A systematic comparison of the experimentally established excitation scheme of Po-212 with shell-model calculations was performed. This comparison suggests that the six states with excitation energies (spins and parities) of 1744 (4(-)), 1751 (8(-)), 1787 (6(-)), 1946 (4(-)), 1986 (8(-)), and 2016 (6(-)) keV, which previously were interpreted as alpha-cluster states, may in fact be of positive parity and belong to low-lying shell-model multiplets. This reinterpretation of the structure of Po-212 is supported by experimental information with respect to the linear polarization of gamma rays, which suggests a magnetic character of the 432-keV gamma ray decaying from the state at an excitation energy of 1787 keV to the 6(1)(+) yrast state, and exclusive reaction cross sections.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Fernandez, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jungclaus, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Golubev, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rudolph, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sarmiento, L. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gargano, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Naidja, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Astier, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dupont, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gadea, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nacher, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Perea, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wimmer, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clement, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fremont, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Goupil, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Houarner, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jacquot, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Korichi, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lemasson, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, H. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ljungvall, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menager, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Perez-Vidal, R. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Petrache, C. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ralet, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ropert, J. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Saillant, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Samark-Roth, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Simpson, G. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Spitaels, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zielinska, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ansari, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dudouet, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Illana, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jurado, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kocheva, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lorenz, Ch UNSPECIFIED UNSPECIFIED UNSPECIFIED Quintana, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rainovski, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Redon, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tocabens, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Barrientos, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benzoni, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Birkenbach, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boston, A. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boston, H. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bracco, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ciemala, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Collado, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cullen, D. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Domingo-Pardo, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eberth, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gonzalez, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Harkness-Brennan, L. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hess, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Judson, D. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Korten, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Leoni, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maj, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menegazzo, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mengoni, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Michelagnoli, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Million, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Napoli, D. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nyberg, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Podolyak, Zs UNSPECIFIED UNSPECIFIED UNSPECIFIED Pullia, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Reiter, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchis, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stezowski, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Theisen, Ch UNSPECIFIED UNSPECIFIED UNSPECIFIED Valiente-Dobon, J. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-606668
DOI:	10.1103/PhysRevC.104.054316
Journal or Publication Title:	Phys. Rev. C
Volume:	104
Number:	5
Date:	2021
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9993
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language AGATA; SINGLE; O-16 Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60666