Nuclear Resonance Fluorescence off 54Cr: The Onset of the Pygmy Dipole Resonance
Nuclear Resonance Fluorescence off 54Cr: The Onset of the Pygmy Dipole Resonance
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54Cr 的核共振荧光:侏儒偶极子共振的开始
DOI:
10.1088/1742-6596/724/1/012040
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
中科院分区:
文献类型:
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作者:
Low-lying electric and magnetic dipole excitations (E1 and M1) below the neutron separation threshold, particularly the Pygmy Dipole Resonance (PDR), have drawn considerable attention in the last years. So far, mostly moderately heavy nuclei in the mass regions around A= 90 and A= 140 were examined with respect to the PDR. In the present work, the systematics of the PDR have been extended by measuring excitation strengths and parity quantum numbers of J= 1 states in lighter nuclei near A= 50 in order to gather information on the onset of the PDR. The nuclei 50, 52, 54 Cr and 48, 50 Ti were examined via bremsstrahlung produced at the DArmstadt Superconducting electron Linear Accelerator (S-DALINAC) with photon energies up to 9.7 MeV with the method of nuclear resonance fluorescence. Numerous excited states were observed, many of which for the first time. The parity quantum numbers of these states have been determined at the High Intensity Gamma-ray Source (HIγS) of the Triangle Universities Nuclear Laboratory in Durham, NC, USA. Informations to the methods and the experimental setups will be provided and the results on 54 Cr achieved will be discussed with respect to the onset of the PDR.
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DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
C. Romig
通讯作者:
C. Romig
DOI:
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发表时间:
2011
期刊:
影响因子:
--
作者:
K. Sonnabend;D. Savran;J. Beller;M. Büssing;A. Constantinescu;M. Elvers;J. Endres;M. Fritzsche;J. Glorius;J. Hasper;J. Isaak;B. Löher;S. Müller;N. Pietralla;C. Romig;A. Sauerwein;L. Schnorrenberger;C. Wälzlein;A. Zilges;M. Zweidinger
通讯作者:
M. Zweidinger
影响因子:
8.6
作者:
T. Hartmann;M. Babilon;S. Kamerdzhiev;E. Litvinova;D. Savran;S. Volz;A. Zilges
通讯作者:
A. Zilges
影响因子:
8.6
作者:
N. Pietralla;N. Pietralla;Z. Berant;Z. Berant;Vladimir Litvinenko;S. Hartman;F. F. Mikhailov;I. Pinayev;G. Swift;M. Ahmed;J. Kelley;S. Nelson;R. Prior;K. Sabourov;A. Tonchev;H. Weller
通讯作者:
H. Weller
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
W. Andrejtscheff;C. Kohstall;P. Brentano;C. Fransen;U. Kneissl;N. Pietralla;H. Pitz
通讯作者:
H. Pitz