Low-lying electric and magnetic dipole excitations in the transitional
nucleus Nd-144 have been studied in nuclear resonance fluorescence
experiments performed with a bremsstrahlung beam (end point energy 4.1
MeV). The use of high-resolution gamma-ray spectrometers and a sectored
single-crystal Compton polarimeter provided detailed information on
excitation energies, spins, parities, decay widths, transition
probabilities, and branching ratios of numerous new spin-1 states in
Nd-144. The strong E1 excitation at 2185 keV in this N = 84 nucleus is
interpreted as the quadrupole-octupole coupled two-phonon excitation
which has been observed systematically in the neighboring N = 82
isotones. The decay properties of this 1(-) state are compared with the
systematics of the low-lying 1(-) levels in the other even-even, stable
Nd isotopes. The M1 excitations in Nd-144 are discussed with respect to
the deformation dependence of the orbital M1 `'scissors mode,'' the
so-called `'delta(2) law,'' which has been studied previously in the
other stable even-even Nd nuclei and in the Sm isotopes.
%0 Journal Article
%1 ISI:A1997XW37900008
%A Eckert, T
%A Beck, O
%A Besserer, J
%A vonBrentano, P
%A Fischer, R
%A Herzberg, RD
%A Kneissl, U
%A Margraf, J
%A Maser, H
%A Nord, A
%A Pietralla, N
%A Pitz, HH
%A Yates, SW
%A Zilges, A
%D 1997
%J Phys. Rev. C
%K imported myown zilges
%N 3
%P 1256-1265
%R 10.1103/PhysRevC.56.1256
%T Dipole excitations in the transitional nucleus Nd-144 studied in photon
scattering experiments
%V 56
%X Low-lying electric and magnetic dipole excitations in the transitional
nucleus Nd-144 have been studied in nuclear resonance fluorescence
experiments performed with a bremsstrahlung beam (end point energy 4.1
MeV). The use of high-resolution gamma-ray spectrometers and a sectored
single-crystal Compton polarimeter provided detailed information on
excitation energies, spins, parities, decay widths, transition
probabilities, and branching ratios of numerous new spin-1 states in
Nd-144. The strong E1 excitation at 2185 keV in this N = 84 nucleus is
interpreted as the quadrupole-octupole coupled two-phonon excitation
which has been observed systematically in the neighboring N = 82
isotones. The decay properties of this 1(-) state are compared with the
systematics of the low-lying 1(-) levels in the other even-even, stable
Nd isotopes. The M1 excitations in Nd-144 are discussed with respect to
the deformation dependence of the orbital M1 `'scissors mode,'' the
so-called `'delta(2) law,'' which has been studied previously in the
other stable even-even Nd nuclei and in the Sm isotopes.
@article{ISI:A1997XW37900008,
abstract = {Low-lying electric and magnetic dipole excitations in the transitional
nucleus Nd-144 have been studied in nuclear resonance fluorescence
experiments performed with a bremsstrahlung beam (end point energy 4.1
MeV). The use of high-resolution gamma-ray spectrometers and a sectored
single-crystal Compton polarimeter provided detailed information on
excitation energies, spins, parities, decay widths, transition
probabilities, and branching ratios of numerous new spin-1 states in
Nd-144. The strong E1 excitation at 2185 keV in this N = 84 nucleus is
interpreted as the quadrupole-octupole coupled two-phonon excitation
which has been observed systematically in the neighboring N = 82
isotones. The decay properties of this 1(-) state are compared with the
systematics of the low-lying 1(-) levels in the other even-even, stable
Nd isotopes. The M1 excitations in Nd-144 are discussed with respect to
the deformation dependence of the orbital M1 `'scissors mode,'' the
so-called `'delta(2) law,'' which has been studied previously in the
other stable even-even Nd nuclei and in the Sm isotopes.},
added-at = {2019-11-20T10:09:48.000+0100},
author = {Eckert, T and Beck, O and Besserer, J and vonBrentano, P and Fischer, R and Herzberg, RD and Kneissl, U and Margraf, J and Maser, H and Nord, A and Pietralla, N and Pitz, HH and Yates, SW and Zilges, A},
biburl = {https://www.bibsonomy.org/bibtex/2b7b4714792f90f64e8a9d0f69e484bd4/ikpcologne},
doi = {10.1103/PhysRevC.56.1256},
eissn = {2469-9993},
interhash = {78076f85eb83a7abc7ee4882338d7138},
intrahash = {b7b4714792f90f64e8a9d0f69e484bd4},
issn = {2469-9985},
journal = {Phys. Rev. C},
keywords = {imported myown zilges},
month = SEP,
number = 3,
orcid-numbers = {Pietralla, Norbert/0000-0002-4797-3032},
pages = {1256-1265},
researcherid-numbers = {Herzberg, Rolf-Dietmar/E-1558-2011
Pietralla, Norbert/L-8465-2017
Zilges, Andreas/G-9984-2011},
timestamp = {2019-11-20T10:09:48.000+0100},
title = {Dipole excitations in the transitional nucleus Nd-144 studied in photon
scattering experiments},
unique-id = {ISI:A1997XW37900008},
volume = 56,
year = 1997
}