Abstract.
The fragmentation of a 550MeV/u primary beam of 58Ni on a 9Be target has been used to measure time- and energy-correlated γ decays following the implantation of event-by-event discriminated secondary fragments into a 9Be stopper plate. A new isomeric γ decay with T 1/2 = 14(\( \begin{smallmatrix}6 4\end{smallmatrix}\)) ns and E γ = 646.2(2) keV is observed and attributed to the decay of the yrast 3/2- state in 53 27Co26 . 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 , T z = ±1/2 mirror nuclei 53Co and 53Fe .
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
P. Walker, G. Dracoulis, Nature 399, 35 (1999).
A. Jungclaus, Phys. Rev. Lett. 99, 132501 (2007).
C. Chandler, Phys. Rev. C 61, 044309 (2000).
A.B. Garnsworthy, Phys. Lett. B 660, 32 (2008).
P.H. Regan, Nucl. Phys. A 787, 491c (2007).
D. Rudolph, Eur. Phys. J. ST 150, 173 (2007).
A.P. Zuker, S.M. Lenzi, G. Martinez-Pinedo, A. Poves, Phys. Rev. Lett. 89, 142502 (2002).
E. Caurier, G. Martinez-Pinedo, F. Nowacki, A. Poves, A.P. Zuker, Rev. Mod. Phys. 77, 427 (2005).
M.A. Bentley, S.M. Lenzi, Prog. Part. Nucl. Phys. 59, 497 (2007).
J. Ekman, C. Fahlander, D. Rudolph, Mod. Phys. Lett. A 20, 2977 (2005).
A. Poves, J. Sanchez-Solano, E. Caurier, F. Nowacki, Nucl. Phys. A 694, 157 (2001).
M. Honma, B.A. Brown, T. Mizusaki, T. Otsuka, Phys. Rev. C 65, 061301(R) (2002).
M. Honma, B.A. Brown, T. Mizusaki, T. Otsuka, Phys. Rev. C 69, 034335 (2004)
R. du Rietz, Phys. Rev. Lett. 93, 222501 (2004).
D. Rudolph, submitted to Phys. Rev. Lett.
K.L. Yurkewicz, Phys. Rev. C 70, 054319 (2004).
H. Junde, Nucl. Data Sheets 87, 507 (1999).
R. du Rietz, Phys. Rev. C 72, 014307 (2005).
K.P. Jackson, C.U. Cardinal, H.C. Evans, N.A. Jelley, J. Cerny, Phys. Lett. B 33, 281 (1970)
S.J. Williams, Phys. Rev. C 68, 011301(R) (2003).
H. Geissel, Nucl. Instrum. Methods B 70, 286 (1992).
J. Eberth, H.G. Thomas, P. von Brentano, R.M. Lieder, H.M. Jäger, H. Kämmerling, M. Berst, D. Gutknecht, R. Henck, Nucl. Instrum. Methods A 369, 135 (1996).
R. Hoischen, Master thesis, Lund University, unpublished, http://wwwnsg.nuclear.lu.se/projects.asp.
S. Pietri, Acta Phys. Pol. 38, 1255 (2007).
S. Pietri, Nucl. Instrum. Methods B 261, 1079 (2007).
E. Bouchez, Phys. Rev. Lett. 90, 082502 (2003).
C. Chandler, Phys. Rev. C 56, R2924 (1997).
F. Becker, Eur. Phys. J. A 4, 103 (1999).
M. Caamaño, Eur. Phys. J. A 23, 201 (2005).
J.A. Cameron, B. Singh, Nucl. Data Sheets 92, 783 (2001).
H. Junde, H. Su, Nucl. Data Sheets 107, 1393 (2006).
Nuclear Structure and Decay Data base, NuDat 2.4, http://www.nndc.bnl.gov/nudat2.
H. Junde, Nucl. Data Sheets 64, 723 (1991) and ENSDF updates.
D. Rudolph, C. Baktash, M.J. Brinkman, M. Devlin, H.-Q. Jin, D.R. LaFosse, L.L. Riedinger, D.G. Sarantites, C.-H. Yu, Eur. Phys. J. A 4, 115 (1999).
I. Schneider, A.F. Lisetskiy, C. Frießner, R.V. Jolos, N. Pietralla, A. Schmidt, D. Weisshaar, P. von Brentano, Phys. Rev. C 61, 044312 (2000).
E.K. Johansson, Eur. Phys. J. A 27, 157 (2006).
N. Pietralla, private communication.
H. Junde, Nucl. Data Sheets 86, 315 (1999).
E. Caurier, shell model code ANTOINE, IReS Strasbourg 1989, 2002
M. Horoi, B.A. Brown, T. Otsuka, M. Honma, T. Mizusaki, Phys. Rev. C 73, 061305(R) (2006).
A. Gadea, Phys. Rev. Lett. 97, 152501 (2006).
Author information
Authors and Affiliations
Corresponding author
Additional information
R. Krücken
Rights and permissions
About this article
Cite this article
Rudolph, D., Hoischen, R., Hellström, M. et al. Evidence for an isomeric 3/2- state in 53Co . Eur. Phys. J. A 36, 131–138 (2008). https://doi.org/10.1140/epja/i2008-10587-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epja/i2008-10587-4