γ-ray spectroscopy of At197

K. Andgren; U. Jakobsson; B. Cederwall; J. Uusitalo; T. Bäck; S. J. Freeman; P. T. Greenlees; B. Hadinia; A. Hugues; A. Johnson; P. M. Jones; D. T. Joss; S. Juutinen; R. Julin; S. Ketelhut; A. Khaplanov; M. Leino; M. Nyman; R. D. Page; P. Rahkila; M. Sandzelius; P. Sapple; J. Sarén; C. Scholey; J. Simpson; J. Sorri; J. Thomson; R. Wyss

doi:10.1103/PhysRevC.78.044328

γ-ray spectroscopy of At197

K. Andgren
, U. Jakobsson
, B. Cederwall
, J. Uusitalo
, T. Bäck
, S. J. Freeman
, P. T. Greenlees
, B. Hadinia
, A. Hugues
, A. Johnson
, P. M. Jones
, D. T. Joss
, S. Juutinen
, R. Julin
, S. Ketelhut
, A. Khaplanov
, M. Leino
, M. Nyman
, R. D. Page
, P. Rahkila

M. Sandzelius, P. Sapple, J. Sarén, C. Scholey, J. Simpson, J. Sorri, J. Thomson, R. Wyss

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

16 Scopus citations

Abstract

Excited states of the extremely neutron-deficient nucleus At197 have been studied in an in-beam experiment using the fusion-evaporation reaction Sn118(Kr82,p2n)At197. γ rays belonging to At197 feeding the Iπ=(9/2-) ground state, as well as γ rays feeding the 311-keV Iπ=(13/2+) isomer, decaying via the emission of γ rays, and the 52-keV Iπ=(1/2+) α-decaying isomer have been identified using the recoil-α-decay tagging technique. Total Routhian surface calculations predict a near-spherical shape for the (9/2-) ground state and oblate shapes with β2 around -0.2 for the (1/2+) and the (13/2+) states. These predictions agree with our experimental findings.

Original language	English
Article number	044328
Journal	Physical Review C - Nuclear Physics
Volume	78
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.78.044328
State	Published - Oct 27 2008
Externally published	Yes

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Andgren, K., Jakobsson, U., Cederwall, B., Uusitalo, J., Bäck, T., Freeman, S. J., Greenlees, P. T., Hadinia, B., Hugues, A., Johnson, A., Jones, P. M., Joss, D. T., Juutinen, S., Julin, R., Ketelhut, S., Khaplanov, A., Leino, M., Nyman, M., Page, R. D., ... Wyss, R. (2008). γ-ray spectroscopy of At197. Physical Review C - Nuclear Physics, 78(4), Article 044328. https://doi.org/10.1103/PhysRevC.78.044328

@article{030f9b6de5094a43b8253aed6f1bc710,

title = "γ-ray spectroscopy of At197",

abstract = "Excited states of the extremely neutron-deficient nucleus At197 have been studied in an in-beam experiment using the fusion-evaporation reaction Sn118(Kr82,p2n)At197. γ rays belonging to At197 feeding the Iπ=(9/2-) ground state, as well as γ rays feeding the 311-keV Iπ=(13/2+) isomer, decaying via the emission of γ rays, and the 52-keV Iπ=(1/2+) α-decaying isomer have been identified using the recoil-α-decay tagging technique. Total Routhian surface calculations predict a near-spherical shape for the (9/2-) ground state and oblate shapes with β2 around -0.2 for the (1/2+) and the (13/2+) states. These predictions agree with our experimental findings.",

author = "K. Andgren and U. Jakobsson and B. Cederwall and J. Uusitalo and T. B{\"a}ck and Freeman, \{S. J.\} and Greenlees, \{P. T.\} and B. Hadinia and A. Hugues and A. Johnson and Jones, \{P. M.\} and Joss, \{D. T.\} and S. Juutinen and R. Julin and S. Ketelhut and A. Khaplanov and M. Leino and M. Nyman and Page, \{R. D.\} and P. Rahkila and M. Sandzelius and P. Sapple and J. Sar{\'e}n and C. Scholey and J. Simpson and J. Sorri and J. Thomson and R. Wyss",

year = "2008",

month = oct,

day = "27",

doi = "10.1103/PhysRevC.78.044328",

language = "English",

volume = "78",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "4",

}

Andgren, K, Jakobsson, U, Cederwall, B, Uusitalo, J, Bäck, T, Freeman, SJ, Greenlees, PT, Hadinia, B, Hugues, A, Johnson, A, Jones, PM, Joss, DT, Juutinen, S, Julin, R, Ketelhut, S, Khaplanov, A, Leino, M, Nyman, M, Page, RD, Rahkila, P, Sandzelius, M, Sapple, P, Sarén, J, Scholey, C, Simpson, J, Sorri, J, Thomson, J & Wyss, R 2008, 'γ-ray spectroscopy of At197', Physical Review C - Nuclear Physics, vol. 78, no. 4, 044328. https://doi.org/10.1103/PhysRevC.78.044328

TY - JOUR

T1 - γ-ray spectroscopy of At197

AU - Andgren, K.

AU - Jakobsson, U.

AU - Cederwall, B.

AU - Uusitalo, J.

AU - Bäck, T.

AU - Freeman, S. J.

AU - Greenlees, P. T.

AU - Hadinia, B.

AU - Hugues, A.

AU - Johnson, A.

AU - Jones, P. M.

AU - Joss, D. T.

AU - Juutinen, S.

AU - Julin, R.

AU - Ketelhut, S.

AU - Khaplanov, A.

AU - Leino, M.

AU - Nyman, M.

AU - Page, R. D.

AU - Rahkila, P.

AU - Sandzelius, M.

AU - Sapple, P.

AU - Sarén, J.

AU - Scholey, C.

AU - Simpson, J.

AU - Sorri, J.

AU - Thomson, J.

AU - Wyss, R.

PY - 2008/10/27

Y1 - 2008/10/27

N2 - Excited states of the extremely neutron-deficient nucleus At197 have been studied in an in-beam experiment using the fusion-evaporation reaction Sn118(Kr82,p2n)At197. γ rays belonging to At197 feeding the Iπ=(9/2-) ground state, as well as γ rays feeding the 311-keV Iπ=(13/2+) isomer, decaying via the emission of γ rays, and the 52-keV Iπ=(1/2+) α-decaying isomer have been identified using the recoil-α-decay tagging technique. Total Routhian surface calculations predict a near-spherical shape for the (9/2-) ground state and oblate shapes with β2 around -0.2 for the (1/2+) and the (13/2+) states. These predictions agree with our experimental findings.

AB - Excited states of the extremely neutron-deficient nucleus At197 have been studied in an in-beam experiment using the fusion-evaporation reaction Sn118(Kr82,p2n)At197. γ rays belonging to At197 feeding the Iπ=(9/2-) ground state, as well as γ rays feeding the 311-keV Iπ=(13/2+) isomer, decaying via the emission of γ rays, and the 52-keV Iπ=(1/2+) α-decaying isomer have been identified using the recoil-α-decay tagging technique. Total Routhian surface calculations predict a near-spherical shape for the (9/2-) ground state and oblate shapes with β2 around -0.2 for the (1/2+) and the (13/2+) states. These predictions agree with our experimental findings.

UR - https://www.scopus.com/pages/publications/55849132529

U2 - 10.1103/PhysRevC.78.044328

DO - 10.1103/PhysRevC.78.044328

M3 - Article

AN - SCOPUS:55849132529

SN - 0556-2813

VL - 78

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044328

ER -

γ-ray spectroscopy of At197

Abstract

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