Observation of a New High-spin Isomer in 94Pd

T. S. Brock; B. S. Nara Singh; P. Boutachkov; N. Braun; A. Blazhev; Z. Liu; R. Wadsworth; M. Gorska; H. Grawe; S. Pietri; C. Domingo-Pardo; Dirk Rudolph; S. J. Steer; A. Atac; L. Bettermann; L. Caceres; T. Engert; K. Eppinger; T. Faestermann; F. Farinon; F. Finke; K. Geibel; J. Gerl; R. Gernhaeuser; N. Goel; A. Gottardo; J. Grebosz; C. Hinke; Robert Hoischen; G. Ilie; H. Iwasaki; J. Jolie; A. Kaskas; I. Kojuharov; R. Kruecken; N. Kurz; E. Merchan; C. Nociforo; J. Nyberg; M. Pfuetzner; A. Prochazka; Zs Podolyak; P. H. Regan; P. Reiter; S. Rinta-Antila; H. Schaffner; C. Scholl; P. -A. Soderstrom; N. Warr; H. Weick; H. -J. Wollersheim; P. J. Woods

doi:10.1103/PhysRevC.82.061309

Observation of a New High-spin Isomer in 94Pd

T. S. Brock, B. S. Nara Singh, P. Boutachkov, N. Braun, A. Blazhev, Z. Liu, R. Wadsworth, M. Gorska, H. Grawe, S. Pietri, C. Domingo-Pardo, Dirk Rudolph, S. J. Steer, A. Atac, L. Bettermann, L. Caceres, T. Engert, K. Eppinger, T. Faestermann, F. FarinonF. Finke, K. Geibel, J. Gerl, R. Gernhaeuser, N. Goel, A. Gottardo, J. Grebosz, C. Hinke, Robert Hoischen, G. Ilie, H. Iwasaki, J. Jolie, A. Kaskas, I. Kojuharov, R. Kruecken, N. Kurz, E. Merchan, C. Nociforo, J. Nyberg, M. Pfuetzner, A. Prochazka, Zs Podolyak, P. H. Regan, P. Reiter, S. Rinta-Antila, H. Schaffner, C. Scholl, P. -A. Soderstrom, N. Warr, H. Weick, H. -J. Wollersheim, P. J. Woods

Nuclear physics

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Abstract

A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and reveals the importance of such orbits for understanding the decay properties of high-spin isomers in this region. However, despite the need for the extended model space for the E3 decay, the dominant configuration for the 19(-) state remains (p p(1/2)(-1)g(9/2)(-3))(11)circle times(nu g(9/2)(-2))(8). The half-life of the known, 14(+), isomer was remeasured and yielded a value of 499(13) ns.

Original language	English
Article number	061309(R)
Journal	Physical Review C (Nuclear Physics)
Volume	82
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.82.061309
Publication status	Published - 2010

Subject classification (UKÄ)

Subatomic Physics

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10.1103/PhysRevC.82.061309

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Brock, T. S., Singh, B. S. N., Boutachkov, P., Braun, N., Blazhev, A., Liu, Z., Wadsworth, R., Gorska, M., Grawe, H., Pietri, S., Domingo-Pardo, C., Rudolph, D., Steer, S. J., Atac, A., Bettermann, L., Caceres, L., Engert, T., Eppinger, K., Faestermann, T., ... Woods, P. J. (2010). Observation of a New High-spin Isomer in 94Pd. Physical Review C (Nuclear Physics), 82(6), [061309(R)]. https://doi.org/10.1103/PhysRevC.82.061309

@article{8a1522fadfc541b7a82a9d2eae149aff,

title = "Observation of a New High-spin Isomer in 94Pd",

abstract = "A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and reveals the importance of such orbits for understanding the decay properties of high-spin isomers in this region. However, despite the need for the extended model space for the E3 decay, the dominant configuration for the 19(-) state remains (p p(1/2)(-1)g(9/2)(-3))(11)circle times(nu g(9/2)(-2))(8). The half-life of the known, 14(+), isomer was remeasured and yielded a value of 499(13) ns.",

author = "Brock, {T. S.} and Singh, {B. S. Nara} and P. Boutachkov and N. Braun and A. Blazhev and Z. Liu and R. Wadsworth and M. Gorska and H. Grawe and S. Pietri and C. Domingo-Pardo and Dirk Rudolph and Steer, {S. J.} and A. Atac and L. Bettermann and L. Caceres and T. Engert and K. Eppinger and T. Faestermann and F. Farinon and F. Finke and K. Geibel and J. Gerl and R. Gernhaeuser and N. Goel and A. Gottardo and J. Grebosz and C. Hinke and Robert Hoischen and G. Ilie and H. Iwasaki and J. Jolie and A. Kaskas and I. Kojuharov and R. Kruecken and N. Kurz and E. Merchan and C. Nociforo and J. Nyberg and M. Pfuetzner and A. Prochazka and Zs Podolyak and Regan, {P. H.} and P. Reiter and S. Rinta-Antila and H. Schaffner and C. Scholl and Soderstrom, {P. -A.} and N. Warr and H. Weick and Wollersheim, {H. -J.} and Woods, {P. J.}",

year = "2010",

doi = "10.1103/PhysRevC.82.061309",

language = "English",

volume = "82",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

}

Brock, TS, Singh, BSN, Boutachkov, P, Braun, N, Blazhev, A, Liu, Z, Wadsworth, R, Gorska, M, Grawe, H, Pietri, S, Domingo-Pardo, C, Rudolph, D, Steer, SJ, Atac, A, Bettermann, L, Caceres, L, Engert, T, Eppinger, K, Faestermann, T, Farinon, F, Finke, F, Geibel, K, Gerl, J, Gernhaeuser, R, Goel, N, Gottardo, A, Grebosz, J, Hinke, C, Hoischen, R, Ilie, G, Iwasaki, H, Jolie, J, Kaskas, A, Kojuharov, I, Kruecken, R, Kurz, N, Merchan, E, Nociforo, C, Nyberg, J, Pfuetzner, M, Prochazka, A, Podolyak, Z, Regan, PH, Reiter, P, Rinta-Antila, S, Schaffner, H, Scholl, C, Soderstrom, P-A, Warr, N, Weick, H, Wollersheim, H-J & Woods, PJ 2010, 'Observation of a New High-spin Isomer in 94Pd', Physical Review C (Nuclear Physics), vol. 82, no. 6, 061309(R). https://doi.org/10.1103/PhysRevC.82.061309

TY - JOUR

T1 - Observation of a New High-spin Isomer in 94Pd

AU - Brock, T. S.

AU - Singh, B. S. Nara

AU - Boutachkov, P.

AU - Braun, N.

AU - Blazhev, A.

AU - Liu, Z.

AU - Wadsworth, R.

AU - Gorska, M.

AU - Grawe, H.

AU - Pietri, S.

AU - Domingo-Pardo, C.

AU - Rudolph, Dirk

AU - Steer, S. J.

AU - Atac, A.

AU - Bettermann, L.

AU - Caceres, L.

AU - Engert, T.

AU - Eppinger, K.

AU - Faestermann, T.

AU - Farinon, F.

AU - Finke, F.

AU - Geibel, K.

AU - Gerl, J.

AU - Gernhaeuser, R.

AU - Goel, N.

AU - Gottardo, A.

AU - Grebosz, J.

AU - Hinke, C.

AU - Hoischen, Robert

AU - Ilie, G.

AU - Iwasaki, H.

AU - Jolie, J.

AU - Kaskas, A.

AU - Kojuharov, I.

AU - Kruecken, R.

AU - Kurz, N.

AU - Merchan, E.

AU - Nociforo, C.

AU - Nyberg, J.

AU - Pfuetzner, M.

AU - Prochazka, A.

AU - Podolyak, Zs

AU - Regan, P. H.

AU - Reiter, P.

AU - Rinta-Antila, S.

AU - Schaffner, H.

AU - Scholl, C.

AU - Soderstrom, P. -A.

AU - Warr, N.

AU - Weick, H.

AU - Wollersheim, H. -J.

AU - Woods, P. J.

PY - 2010

Y1 - 2010

N2 - A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and reveals the importance of such orbits for understanding the decay properties of high-spin isomers in this region. However, despite the need for the extended model space for the E3 decay, the dominant configuration for the 19(-) state remains (p p(1/2)(-1)g(9/2)(-3))(11)circle times(nu g(9/2)(-2))(8). The half-life of the known, 14(+), isomer was remeasured and yielded a value of 499(13) ns.

AB - A second gamma-decaying high-spin isomeric state, with a half-life of 197(22) ns, has been identified in the N = Z + 2 nuclide Pd-94 as part of a stopped-beam Rare Isotope Spectroscopic INvestigation at GSI (RISING) experiment. Weisskopf estimates were used to establish a tentative spin/parity of 19(-), corresponding to the maximum possible spin of a negative parity state in the restricted (p(1/2), g(9/2)) model space of empirical shell model calculations. The reproduction of the E3 decay properties of the isomer required an extension of the model space to include the f (5/2) and p(3/2) orbitals using the CD-Bonn potential. This is the first time that such an extension has been required for a high-spin isomer in the vicinity of Sn-100 and reveals the importance of such orbits for understanding the decay properties of high-spin isomers in this region. However, despite the need for the extended model space for the E3 decay, the dominant configuration for the 19(-) state remains (p p(1/2)(-1)g(9/2)(-3))(11)circle times(nu g(9/2)(-2))(8). The half-life of the known, 14(+), isomer was remeasured and yielded a value of 499(13) ns.

U2 - 10.1103/PhysRevC.82.061309

DO - 10.1103/PhysRevC.82.061309

M3 - Article

VL - 82

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 6

M1 - 061309(R)

ER -

Observation of a New High-spin Isomer in 94Pd

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