scholarly journals Dependence of the Giant Dipole Strength Function on Excitation Energy

1982 ◽  
Vol 49 (7) ◽  
pp. 434-437 ◽  
Author(s):  
J. E. Draper ◽  
J. O. Newton ◽  
L. G. Sobotka ◽  
H. Lindenberger ◽  
G. J. Wozniak ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Strength Function ◽  
Dipole Strength

Hybrid random-phase-approximation–cluster model for the dipole strength function ofLi11

1991 ◽  
Vol 43 (5) ◽  
pp. R2049-R2051 ◽  
Author(s):  
N. Teruya ◽  
C. A. Bertulani ◽  
S. Krewald ◽  
H. Dias ◽  
M. S. Hussein
Keyword(s):  
Cluster Model ◽  
Random Phase Approximation ◽  
Strength Function ◽  
Random Phase ◽  
Phase Approximation ◽  
Dipole Strength

Excitation-energy dependent strength-function analysis of hot GDR experiments

1999 ◽  
Vol 649 (1-4) ◽  
pp. 173-180 ◽  
Author(s):  
G. Gervais ◽  
M. Thoennessen ◽  
W.E. Ormand
Keyword(s):  
Excitation Energy ◽  
Function Analysis ◽  
Strength Function ◽  
Energy Dependent

scholarly journals Microscopic description of the pygmy dipole resonance in neutron-rich Ca isotopes

2018 ◽  
Vol 194 ◽  
pp. 04002
Author(s):  
N.N. Arsenyev ◽  
A.P. Severyukhin ◽  
V.V. Voronov ◽  
N.V. Giai
Keyword(s):  
Electric Dipole ◽  
Random Phase Approximation ◽  
Strength Function ◽  
Random Phase ◽  
Strength Distribution ◽  
Low Energy ◽  
Dipole Strength ◽  
Quasiparticle Random Phase Approximation ◽  
Dipole Resonance ◽  
Dipole Response

We study the effects of the phonon-phonon coupling on the low-energy electric dipole response within a microscopic model based on an effective Skyrme interaction. The finite rank separable approach for the quasiparticle random phase approximation is used. Choosing as an example the isotopic chain of Calcium, we show the ability of the method to describe the low-energy E1 strength distribution. With one and the same set of parameters we describe available experimental data for 48Ca and predict the electric dipole strength function for 50Ca.

scholarly journals The Gogny-HFB+QRPA dipole strength function and its application to radiative neutron capture cross section

2018 ◽  
Vol 178 ◽  
pp. 04001
Author(s):  
Stephane Goriely ◽  
Stephane Hilaire ◽  
Sophie Péru
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Neutron Capture ◽  
Capture Cross Section ◽  
Strength Function ◽  
Capture Cross ◽  
Neutron Capture Cross Section ◽  
Dipole Strength ◽  
Radiative Neutron ◽  
Radiative Neutron Capture

Valuable theoretical predictions of nuclear dipole excitations in the whole chart are of great interest for different nuclear applications, including in particular nuclear astrophysics. Here we extend our large-scale calculations of the E1 and M1 absorption γ-ray strength function obtained in the framework of the axially-symmetric deformed quasiparticle random phase approximation (QRPA) based on the finite-range D1M Gogny force to the determination of the de-excitation strength function. To do so, shell-model calculations of the de-excitation dipole strength function as well as experimental data are considered to provide insight in the low-energy limit and to complement the QRPA estimate phenomenologically. We compare our final prediction of the E1 and M1 strengths with available experimental data at low energies and show that a relatively good agreement can be obtained. Its impact on the average radiative width as well as radiative neutron capture cross section is discussed.

Intensity anomaly in the (d,pγ) reaction

1970 ◽  
Vol 48 (6) ◽  
pp. 687-708 ◽  
Author(s):  
G. A. Bartholomew ◽  
I. Bergqvist ◽  
E. D. Earle ◽  
A. J. Ferguson
Keyword(s):  
Excitation Energy ◽  
Gamma Rays ◽  
Single Particle ◽  
Gamma Ray ◽  
Strength Function ◽  
Neutron Separation Energy ◽  
Separation Energy ◽  
Excitation Energies

The spectra of gamma rays detected in coincidence with protons from the (d,pγ) reaction in elements [Formula: see text] and [Formula: see text] have been measured in gross structure with a NaI detector. The region of excitation energies covered in the product nuclei was from 0.8 MeV to about the neutron separation energy, typically 7 MeV. The gamma-ray anomalous bump at about 5.5 MeV was found from regions near the separation energy with an intensity comparable to that previously observed in (n,γ) reactions. By gating techniques the decay of many contiguous intervals of excitation energy, populated in the reaction, was studied. From the results, a strength function for gamma rays between 0.8 and 7 MeV approximately was extracted for Au, where the bump is prominent, and for Ta where the bump is essentially absent. In the particular case of 206Pb(d,pγ)207Pb, the gamma-ray spectra are interpreted in terms of the decay of known single particle states. An interpretation of the intensity anomaly in terms of doorway states is discussed.

Dipole strength function in 20O

2001 ◽  
Vol 687 (1-2) ◽  
pp. 231-236 ◽  
Author(s):  
E. Tryggestad ◽  
T. Aumann ◽  
D. Bazin ◽  
J.R. Beene ◽  
Y. Blumenfeld ◽  
...  
Keyword(s):  
Strength Function ◽  
Dipole Strength

Dipole strength function inLi11

1990 ◽  
Vol 41 (3) ◽  
pp. 1300-1302 ◽  
Author(s):  
G. Bertsch ◽  
J. Foxwell
Keyword(s):  
Strength Function ◽  
Dipole Strength

Deducing primary γ -ray intensities and the dipole strength function in Mo94 via radiative proton capture

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
F. Heim ◽  
J. Mayer ◽  
M. Müller ◽  
P. Scholz ◽  
A. Zilges
Keyword(s):  
Strength Function ◽  
Dipole Strength ◽  
Proton Capture ◽  
Γ Ray
Sign in / Sign up

Export Citation Format

Share Document