Evidence for an Isomeric 3/2- State in 53Co

Dirk Rudolph; Robert Hoischen; Margareta Hellström; S Pietri; Zs Podolyak; P H Regan; A B Garnsworthy; S J Steer; F Becker; P Bednarczyk; L Caceres; P Doornenbal; J Gerl; M Gorska; J Grebosz; I Kojouharov; N Kurz; W Prokopowicz; H Schaffner; H J Wollersheim; Lise-Lotte Andersson; L Atanasova; D L Balabanski; M A Bentley; A Blazhev; C Brandau; J R Brown; Claes Fahlander; Emma Johansson; A Jungclaus

doi:10.1140/epja/i2008-10587-4

Evidence for an Isomeric 3/2- State in 53Co

Dirk Rudolph, Robert Hoischen, Margareta Hellström, S Pietri, Zs Podolyak, P H Regan, A B Garnsworthy, S J Steer, F Becker, P Bednarczyk, L Caceres, P Doornenbal, J Gerl, M Gorska, J Grebosz, I Kojouharov, N Kurz, W Prokopowicz, H Schaffner, H J WollersheimLise-Lotte Andersson, L Atanasova, D L Balabanski, M A Bentley, A Blazhev, C Brandau, J R Brown, Claes Fahlander, Emma Johansson, A Jungclaus

Dept of Physical Geography and Ecosystem Science

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

Abstract

The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53.

Original language	English
Pages (from-to)	131-138
Journal	European Physical Journal A. Hadrons and Nuclei
Volume	36
Issue number	2
DOIs	https://doi.org/10.1140/epja/i2008-10587-4
Publication status	Published - 2008

Subject classification (UKÄ)

Subatomic Physics

Access to Document

10.1140/epja/i2008-10587-4

1 Doctoral Thesis (compilation)

Isotope-Selective Spectroscopy: Fast Timing R&D and fp-Shell Mirror Isomers
Hoischen, R., 2011, Department of Physics, Lund University. 138 p.
Research output: Thesis › Doctoral Thesis (compilation)

1 Finished

Isotope-selective Spectroscopy: Fast Timing R&D and fp-Shell Mirror Isomers
Hoischen, R. (Research student), Rudolph, D. (Supervisor), Golubev, P. (Assistant supervisor) & Gerl, J. (Assistant supervisor)
The Royal Physiographic Society in Lund
2006/10/01 → 2011/03/31
Project: Dissertation

Cite this

Rudolph, D., Hoischen, R., Hellström, M., Pietri, S., Podolyak, Z., Regan, P. H., Garnsworthy, A. B., Steer, S. J., Becker, F., Bednarczyk, P., Caceres, L., Doornenbal, P., Gerl, J., Gorska, M., Grebosz, J., Kojouharov, I., Kurz, N., Prokopowicz, W., Schaffner, H., ... Jungclaus, A. (2008). Evidence for an Isomeric 3/2- State in 53Co. European Physical Journal A. Hadrons and Nuclei, 36(2), 131-138. https://doi.org/10.1140/epja/i2008-10587-4

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title = "Evidence for an Isomeric 3/2- State in 53Co",

abstract = "The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53.",

author = "Dirk Rudolph and Robert Hoischen and Margareta Hellstr{\"o}m and S Pietri and Zs Podolyak and Regan, {P H} and Garnsworthy, {A B} and Steer, {S J} and F Becker and P Bednarczyk and L Caceres and P Doornenbal and J Gerl and M Gorska and J Grebosz and I Kojouharov and N Kurz and W Prokopowicz and H Schaffner and Wollersheim, {H J} and Lise-Lotte Andersson and L Atanasova and Balabanski, {D L} and Bentley, {M A} and A Blazhev and C Brandau and Brown, {J R} and Claes Fahlander and Emma Johansson and A Jungclaus",

year = "2008",

doi = "10.1140/epja/i2008-10587-4",

language = "English",

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pages = "131--138",

journal = "European Physical Journal A. Hadrons and Nuclei",

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Rudolph, D, Hoischen, R, Hellström, M, Pietri, S, Podolyak, Z, Regan, PH, Garnsworthy, AB, Steer, SJ, Becker, F, Bednarczyk, P, Caceres, L, Doornenbal, P, Gerl, J, Gorska, M, Grebosz, J, Kojouharov, I, Kurz, N, Prokopowicz, W, Schaffner, H, Wollersheim, HJ, Andersson, L-L, Atanasova, L, Balabanski, DL, Bentley, MA, Blazhev, A, Brandau, C, Brown, JR, Fahlander, C, Johansson, E & Jungclaus, A 2008, 'Evidence for an Isomeric 3/2- State in 53Co', European Physical Journal A. Hadrons and Nuclei, vol. 36, no. 2, pp. 131-138. https://doi.org/10.1140/epja/i2008-10587-4

TY - JOUR

T1 - Evidence for an Isomeric 3/2- State in 53Co

AU - Rudolph, Dirk

AU - Hoischen, Robert

AU - Hellström, Margareta

AU - Pietri, S

AU - Podolyak, Zs

AU - Regan, P H

AU - Garnsworthy, A B

AU - Steer, S J

AU - Becker, F

AU - Bednarczyk, P

AU - Caceres, L

AU - Doornenbal, P

AU - Gerl, J

AU - Gorska, M

AU - Grebosz, J

AU - Kojouharov, I

AU - Kurz, N

AU - Prokopowicz, W

AU - Schaffner, H

AU - Wollersheim, H J

AU - Andersson, Lise-Lotte

AU - Atanasova, L

AU - Balabanski, D L

AU - Bentley, M A

AU - Blazhev, A

AU - Brandau, C

AU - Brown, J R

AU - Fahlander, Claes

AU - Johansson, Emma

AU - Jungclaus, A

PY - 2008

Y1 - 2008

N2 - The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53.

AB - The fragmentation of a 550MeV/u primary beam of Ni-58 on a Be-9 target has been used to measure time-and energy-correlated gamma decays following the implantation of event-by-event discriminated secondary fragments into a Be-9 stopper plate. A new isomeric gamma decay with T-1/2 = 14(6 4) ns and E-gamma = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2-state in Co-53(27)26. This short-lived isomeric state has been populated by means of nuclear reactions during the stopping process of the secondary fragments. The experimental findings are discussed in the framework of large-scale spherical shell model calculations in conjunction with isospin symmetry-breaking residual interactions for the A = 53, Tz = +/- 1/2 mirror nuclei Co-53 and Fe-53.

U2 - 10.1140/epja/i2008-10587-4

DO - 10.1140/epja/i2008-10587-4

M3 - Article

SN - 1434-6001

VL - 36

SP - 131

EP - 138

JO - European Physical Journal A. Hadrons and Nuclei

JF - European Physical Journal A. Hadrons and Nuclei

IS - 2

ER -

Evidence for an Isomeric 3/2- State in 53Co

Abstract

Subject classification (UKÄ)

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Research output

Isotope-Selective Spectroscopy: Fast Timing R&D and fp-Shell Mirror Isomers

Projects

Isotope-selective Spectroscopy: Fast Timing R&D and fp-Shell Mirror Isomers

Cite this