"Characterising isomeric states - complementary instrumentation"
Paivi Nieminen, University of Jyvaskyla, Finland
(id #140)
Seminar: NoPoster: Yes
Invited talk: No
Characterising isomeric states - complementary instrumentation
P. Nieminen$^{1,2}$, G.J. Lane$^{1}$, T. Kib\'edi$^{1}$,
G.D. Dracoulis$^{1}$, M. Dasgupta$^{1}$, D.J. Hinde$^{1}$
T. Grahn$^{2}$, P.T. Greenlees$^{2}$, K. Hauschild$^{2}$,
A. Herzan$^{2}$, U. Jakobsson$^{2}$, P.M. Jones$^{2}$,
R. Julin$^{2}$, S. Juutinen$^{2}$, S. Ketelhut$^{2}$,
M. Leino$^{2}$, A. Lopez-Martens$^{2}$, P. Peura$^{2}$,
P. Rahkila$^{2}$, S. Rinta-Antila$^{2}$, P. Ruotsalainen$^{2}$,
M. Sandzelius$^{2}$, J. Sar\'en$^{2}$, C. Scholey$^{2}$,
J. Sorri$^{2}$,J. Uusitalo$^{2}$
$^{1}$Department of Nuclear Physics, RSPhysSE, The Australian National University,
Canberra 0200 ACT, Australia\\
$^{2}$Department of Physics, University of Jyv\"askyl\"a, P.O. Box 35, 40014
Jyv\"askyl\"a, Finland\\
Characterisation of isomeric nuclear states requires
detailed knowledge on their de-excitation paths, as well as
on level structures built on these states. The present
contribution introduces complementary aspects of two
sets of instrumentation, across the globe, to examine
isomeric states in heavy nuclei.
At the Heavy-Ion Accelerator Laboratory of the Australian
National University (ANU), a new spectrometer module,
SOLENOGAM [1], is being developed for the focal plane of a
compact 6.5-Tesla superconducting solenoidal
fusion product separator SOLITAIRE [2,3], designed for
reaction studies. Gamma rays and internal conversion
electrons de-exciting isomeric states are measured with
arrays of Ge/LEPS and Si(Li) detectors in close
geometry, and selected by time-correlation techniques
facilitated by flexible beam pulsing. The efficiency and
selectivity in detecting gamma rays and conversion electrons
populating these isomeric states can be provided by the
versatile detector arrays combined with the recoil separator
RITU [4], at the Accelerator Laboratory of the University
of Jyväskylä (JYFL), Finland.
The two instrumentations will be discussed in terms of
selectivity, efficiency and sensitivity for radiation emitted
in intervals of time. The first physics focus for the
SOLENOGAM device is shape coexistence in the neutron-deficient
lead region [5], an interest strongly shared with the JYFL
research programme.
[1] P. Nieminen {\it et al.}, AIP Conf. Proc. {\bf 831} (2006) 517; and to be published.
[2] T. Kib\`edi {\it et al.}, ANU-P/1404 (1999).
[3] M.D. Rodriguez {\it et al.}, AIP Conf. Proc. {\bf 853} (2006) 198; and to be published.
[4] M. Leino {\it et al.}, Nucl. Instr.\Meth. B {\bf 99}, 653 (1995).
[5] G.D. Dracoulis, G.J. Lane, T. Kib\`edi and P. Nieminen, Phys. Rev. C {\bf 79}, 031302 (2009).
P. Nieminen$^{1,2}$, G.J. Lane$^{1}$, T. Kib\'edi$^{1}$,
G.D. Dracoulis$^{1}$, M. Dasgupta$^{1}$, D.J. Hinde$^{1}$
T. Grahn$^{2}$, P.T. Greenlees$^{2}$, K. Hauschild$^{2}$,
A. Herzan$^{2}$, U. Jakobsson$^{2}$, P.M. Jones$^{2}$,
R. Julin$^{2}$, S. Juutinen$^{2}$, S. Ketelhut$^{2}$,
M. Leino$^{2}$, A. Lopez-Martens$^{2}$, P. Peura$^{2}$,
P. Rahkila$^{2}$, S. Rinta-Antila$^{2}$, P. Ruotsalainen$^{2}$,
M. Sandzelius$^{2}$, J. Sar\'en$^{2}$, C. Scholey$^{2}$,
J. Sorri$^{2}$,J. Uusitalo$^{2}$
$^{1}$Department of Nuclear Physics, RSPhysSE, The Australian National University,
Canberra 0200 ACT, Australia\\
$^{2}$Department of Physics, University of Jyv\"askyl\"a, P.O. Box 35, 40014
Jyv\"askyl\"a, Finland\\
Characterisation of isomeric nuclear states requires
detailed knowledge on their de-excitation paths, as well as
on level structures built on these states. The present
contribution introduces complementary aspects of two
sets of instrumentation, across the globe, to examine
isomeric states in heavy nuclei.
At the Heavy-Ion Accelerator Laboratory of the Australian
National University (ANU), a new spectrometer module,
SOLENOGAM [1], is being developed for the focal plane of a
compact 6.5-Tesla superconducting solenoidal
fusion product separator SOLITAIRE [2,3], designed for
reaction studies. Gamma rays and internal conversion
electrons de-exciting isomeric states are measured with
arrays of Ge/LEPS and Si(Li) detectors in close
geometry, and selected by time-correlation techniques
facilitated by flexible beam pulsing. The efficiency and
selectivity in detecting gamma rays and conversion electrons
populating these isomeric states can be provided by the
versatile detector arrays combined with the recoil separator
RITU [4], at the Accelerator Laboratory of the University
of Jyväskylä (JYFL), Finland.
The two instrumentations will be discussed in terms of
selectivity, efficiency and sensitivity for radiation emitted
in intervals of time. The first physics focus for the
SOLENOGAM device is shape coexistence in the neutron-deficient
lead region [5], an interest strongly shared with the JYFL
research programme.
[1] P. Nieminen {\it et al.}, AIP Conf. Proc. {\bf 831} (2006) 517; and to be published.
[2] T. Kib\`edi {\it et al.}, ANU-P/1404 (1999).
[3] M.D. Rodriguez {\it et al.}, AIP Conf. Proc. {\bf 853} (2006) 198; and to be published.
[4] M. Leino {\it et al.}, Nucl. Instr.\Meth. B {\bf 99}, 653 (1995).
[5] G.D. Dracoulis, G.J. Lane, T. Kib\`edi and P. Nieminen, Phys. Rev. C {\bf 79}, 031302 (2009).
