First observation of the decay of a 15- seniority v=4 isomer in Sn128

S. Pietri; A. Jungclaus; M. Górska; H. Grawe; M. Pfützner; L. Cáceres; P. Detistov; S. Lalkovski; V. Modamio; Z. Podolyák; P. H. Regan; D. Rudolph; J. Walker; E. Werner-Malento; P. Bednarczyk; P. Doornenbal; H. Geissel; J. Gerl; J. Grebosz; I. Kojouharov; N. Kurz; W. Prokopowicz; H. Schaffner; H. J. Wollersheim; K. Andgren; J. Benlliure; G. Benzoni; A. M. Bruce; E. Casarejos; B. Cederwall; F. C.L. Crespi; B. Hadinia; M. Hellström; R. Hoischen; G. Ilie; A. Khaplanov; M. Kmiecik; R. Kumar; A. Maj; S. Mandal; F. Montes; S. Myalski; G. Simpson; S. J. Steer; S. Tashenov; O. Wieland

doi:10.1103/PhysRevC.83.044328

First observation of the decay of a 15^- seniority v=4 isomer in Sn128

S. Pietri, A. Jungclaus, M. Górska, H. Grawe, M. Pfützner, L. Cáceres, P. Detistov, S. Lalkovski, V. Modamio, Z. Podolyák, P. H. Regan, D. Rudolph, J. Walker, E. Werner-Malento, P. Bednarczyk, P. Doornenbal, H. Geissel, J. Gerl, J. Grebosz, I. KojouharovN. Kurz, W. Prokopowicz, H. Schaffner, H. J. Wollersheim, K. Andgren, J. Benlliure, G. Benzoni, A. M. Bruce, E. Casarejos, B. Cederwall, F. C.L. Crespi, B. Hadinia, M. Hellström, R. Hoischen, G. Ilie, A. Khaplanov, M. Kmiecik, R. Kumar, A. Maj, S. Mandal, F. Montes, S. Myalski, G. Simpson, S. J. Steer, S. Tashenov, O. Wieland

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Abstract

Isomeric states in the semimagic 128^-130Sn isotopes were populated in the fragmentation of a Xe136 beam on a Be9 target at an energy of 750 A•MeV. The decay of an isomeric state in Sn128 at an excitation energy of 4098 keV has been observed. Its half live has been determined to be T _1/2=220(30) ns from the time distributions of the delayed γ rays emitted in its decay. γγ coincidence relations were analyzed in order to establish the decay pattern of the newly established state toward the known (7^-) and (10⁺) isomers at excitation energies of 2092 and 2492 keV, respectively. Based on a comparison with results of state-of-the-art shell-model calculations the new isomeric state is proposed to have the νh11/2-3d3/2-1 configuration with the four neutron holes in Sn132 maximally aligned to a total spin of Iπ=15^-.

Original language	English
Article number	044328
Journal	Physical Review C - Nuclear Physics
Volume	83
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.83.044328
State	Published - Apr 29 2011
Externally published	Yes

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Pietri, S., Jungclaus, A., Górska, M., Grawe, H., Pfützner, M., Cáceres, L., Detistov, P., Lalkovski, S., Modamio, V., Podolyák, Z., Regan, P. H., Rudolph, D., Walker, J., Werner-Malento, E., Bednarczyk, P., Doornenbal, P., Geissel, H., Gerl, J., Grebosz, J., ... Wieland, O. (2011). First observation of the decay of a 15^- seniority v=4 isomer in Sn128. Physical Review C - Nuclear Physics, 83(4), Article 044328. https://doi.org/10.1103/PhysRevC.83.044328

@article{158c70f847ea47179252c2e2aeec6ed8,

title = "First observation of the decay of a 15- seniority v=4 isomer in Sn128",

abstract = "Isomeric states in the semimagic 128-130Sn isotopes were populated in the fragmentation of a Xe136 beam on a Be9 target at an energy of 750 A•MeV. The decay of an isomeric state in Sn128 at an excitation energy of 4098 keV has been observed. Its half live has been determined to be T 1/2=220(30) ns from the time distributions of the delayed γ rays emitted in its decay. γγ coincidence relations were analyzed in order to establish the decay pattern of the newly established state toward the known (7-) and (10+) isomers at excitation energies of 2092 and 2492 keV, respectively. Based on a comparison with results of state-of-the-art shell-model calculations the new isomeric state is proposed to have the νh11/2-3d3/2-1 configuration with the four neutron holes in Sn132 maximally aligned to a total spin of Iπ=15-.",

author = "S. Pietri and A. Jungclaus and M. G{\'o}rska and H. Grawe and M. Pf{\"u}tzner and L. C{\'a}ceres and P. Detistov and S. Lalkovski and V. Modamio and Z. Podoly{\'a}k and Regan, {P. H.} and D. Rudolph and J. Walker and E. Werner-Malento and P. Bednarczyk and P. Doornenbal and H. Geissel and J. Gerl and J. Grebosz and I. Kojouharov and N. Kurz and W. Prokopowicz and H. Schaffner and Wollersheim, {H. J.} and K. Andgren and J. Benlliure and G. Benzoni and Bruce, {A. M.} and E. Casarejos and B. Cederwall and Crespi, {F. C.L.} and B. Hadinia and M. Hellstr{\"o}m and R. Hoischen and G. Ilie and A. Khaplanov and M. Kmiecik and R. Kumar and A. Maj and S. Mandal and F. Montes and S. Myalski and G. Simpson and Steer, {S. J.} and S. Tashenov and O. Wieland",

year = "2011",

month = apr,

day = "29",

doi = "10.1103/PhysRevC.83.044328",

language = "English",

volume = "83",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "4",

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Pietri, S, Jungclaus, A, Górska, M, Grawe, H, Pfützner, M, Cáceres, L, Detistov, P, Lalkovski, S, Modamio, V, Podolyák, Z, Regan, PH, Rudolph, D, Walker, J, Werner-Malento, E, Bednarczyk, P, Doornenbal, P, Geissel, H, Gerl, J, Grebosz, J, Kojouharov, I, Kurz, N, Prokopowicz, W, Schaffner, H, Wollersheim, HJ, Andgren, K, Benlliure, J, Benzoni, G, Bruce, AM, Casarejos, E, Cederwall, B, Crespi, FCL, Hadinia, B, Hellström, M, Hoischen, R, Ilie, G, Khaplanov, A, Kmiecik, M, Kumar, R, Maj, A, Mandal, S, Montes, F, Myalski, S, Simpson, G, Steer, SJ, Tashenov, S & Wieland, O 2011, 'First observation of the decay of a 15^- seniority v=4 isomer in Sn128', Physical Review C - Nuclear Physics, vol. 83, no. 4, 044328. https://doi.org/10.1103/PhysRevC.83.044328

TY - JOUR

T1 - First observation of the decay of a 15- seniority v=4 isomer in Sn128

AU - Pietri, S.

AU - Jungclaus, A.

AU - Górska, M.

AU - Grawe, H.

AU - Pfützner, M.

AU - Cáceres, L.

AU - Detistov, P.

AU - Lalkovski, S.

AU - Modamio, V.

AU - Podolyák, Z.

AU - Regan, P. H.

AU - Rudolph, D.

AU - Walker, J.

AU - Werner-Malento, E.

AU - Bednarczyk, P.

AU - Doornenbal, P.

AU - Geissel, H.

AU - Gerl, J.

AU - Grebosz, J.

AU - Kojouharov, I.

AU - Kurz, N.

AU - Prokopowicz, W.

AU - Schaffner, H.

AU - Wollersheim, H. J.

AU - Andgren, K.

AU - Benlliure, J.

AU - Benzoni, G.

AU - Bruce, A. M.

AU - Casarejos, E.

AU - Cederwall, B.

AU - Crespi, F. C.L.

AU - Hadinia, B.

AU - Hellström, M.

AU - Hoischen, R.

AU - Ilie, G.

AU - Khaplanov, A.

AU - Kmiecik, M.

AU - Kumar, R.

AU - Maj, A.

AU - Mandal, S.

AU - Montes, F.

AU - Myalski, S.

AU - Simpson, G.

AU - Steer, S. J.

AU - Tashenov, S.

AU - Wieland, O.

PY - 2011/4/29

Y1 - 2011/4/29

N2 - Isomeric states in the semimagic 128-130Sn isotopes were populated in the fragmentation of a Xe136 beam on a Be9 target at an energy of 750 A•MeV. The decay of an isomeric state in Sn128 at an excitation energy of 4098 keV has been observed. Its half live has been determined to be T 1/2=220(30) ns from the time distributions of the delayed γ rays emitted in its decay. γγ coincidence relations were analyzed in order to establish the decay pattern of the newly established state toward the known (7-) and (10+) isomers at excitation energies of 2092 and 2492 keV, respectively. Based on a comparison with results of state-of-the-art shell-model calculations the new isomeric state is proposed to have the νh11/2-3d3/2-1 configuration with the four neutron holes in Sn132 maximally aligned to a total spin of Iπ=15-.

AB - Isomeric states in the semimagic 128-130Sn isotopes were populated in the fragmentation of a Xe136 beam on a Be9 target at an energy of 750 A•MeV. The decay of an isomeric state in Sn128 at an excitation energy of 4098 keV has been observed. Its half live has been determined to be T 1/2=220(30) ns from the time distributions of the delayed γ rays emitted in its decay. γγ coincidence relations were analyzed in order to establish the decay pattern of the newly established state toward the known (7-) and (10+) isomers at excitation energies of 2092 and 2492 keV, respectively. Based on a comparison with results of state-of-the-art shell-model calculations the new isomeric state is proposed to have the νh11/2-3d3/2-1 configuration with the four neutron holes in Sn132 maximally aligned to a total spin of Iπ=15-.

UR - http://www.scopus.com/inward/record.url?scp=79960922942&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.83.044328

DO - 10.1103/PhysRevC.83.044328

M3 - Article

AN - SCOPUS:79960922942

SN - 0556-2813

VL - 83

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044328

ER -

First observation of the decay of a 15- seniority v=4 isomer in Sn128

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First observation of the decay of a 15^- seniority v=4 isomer in Sn128