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:
CreatorsEmailORCIDORCID Put Code
Fernandez, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jungclaus, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Golubev, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rudolph, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sarmiento, L. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gargano, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Naidja, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Astier, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dupont, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gadea, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nacher, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perea, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wimmer, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clement, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fremont, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goupil, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Houarner, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jacquot, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korichi, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lemasson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, H. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ljungvall, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Menager, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perez-Vidal, R. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrache, C. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ralet, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ropert, J. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saillant, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Samark-Roth, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simpson, G. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Spitaels, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zielinska, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ansari, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dudouet, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Illana, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jurado, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kocheva, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lorenz, ChUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Quintana, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rainovski, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Redon, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tocabens, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barrientos, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benzoni, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Birkenbach, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boston, A. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boston, H. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bracco, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ciemala, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Collado, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cullen, D. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Domingo-Pardo, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eberth, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gonzalez, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Harkness-Brennan, L. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hess, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Judson, D. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korten, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Leoni, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maj, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Menegazzo, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mengoni, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michelagnoli, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Million, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Napoli, D. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nyberg, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Podolyak, ZsUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pullia, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reiter, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchis, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stezowski, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Theisen, ChUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, J. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
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:
KeywordsLanguage
AGATA; SINGLE; O-16Multiple languages
Physics, NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60666

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