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Nuclear level densities and gamma-ray strength functions of Ta
C. P. Brits, K. L. Malatji, M. Wiedeking +24
Particle- coincidence experiments were performed at the Oslo Cyclotron Laboratory with the Ta(d,X) and Ta(He,X) reactions, to measure the nuclear level den…
Energy dependence of the prompt -ray emission from the -induced fission of and
S. J. Rose, F. Zeiser, J. N. Wilson +22
Prompt fission -rays are responsible for approximately 5\% of the total energy released in fission, and therefore important to understand when modelling nuclear reactors. In thi…
La(, ) cross sections constrained with statistical decay properties of La nuclei
Bonginkosi Vincent Kheswa, Mathis Wiedeking, Josh Brown +22
The nuclear level densities and -ray strength functions of La were measured using the La(He, ), La(He, He) and $^{1…
Low-energy enhancement and fluctuations of -ray strength functions in Fe: test of the Brink-Axel hypothesis
A. C. Larsen, M. Guttormsen, N. Blasi +21
Nuclear level densities and -ray strength functions of Fe have been extracted from proton- coincidences. A low-energy enhancement in the -ray strength functions…
Completing the nuclear reaction puzzle of the nucleosynthesis of 92Mo
G. M. Tveten, A. Spyrou, R. Schwengner +20
One of the greatest questions for modern physics to address is how elements heavier than iron are created in extreme, astrophysical environments. A particularly challenging part of…
Study of the 238U(d,p) surrogate reaction via the simultaneous measurement of gamma-decay and fission probabilities
Q. Ducasse, B. Jurado, M. Aïche +26
We investigated the 238U(d,p) reaction as a surrogate for the n + 238U reaction. For this purpose we measured for the first time the gamma-decay and fission probabilities of 239U*…
Statistical properties of Pu, and Pu(n,) cross section calculation
T. A. Laplace, F. Zeiser, M. Guttormsen +24
The level density and gamma-ray strength function (gammaSF) of 243Pu have been measured in the quasi-continuum using the Oslo method. Excited states in 243Pu were populated using t…
Experimentally constrained ()Y and ()Y reaction rates relevant to the -process nucleosynthesis
A. C. Larsen, M. Guttormsen, R. Schwengner +18
The nuclear level density and the -ray strength function have been extracted for Y, using the Oslo Method on Y()Y coincidence data. The -ray stre…
Experimental level densities of atomic nuclei
M. Guttormsen, M. Aiche, F. L. Bello Garrote +24
It is almost 80 years since Hans Bethe described the level density as a non-interacting gas of protons and neutrons. In all these years, experimental data were interpreted within t…
Shell-gap reduced level densities in Y
M. Guttormsen, A. C. Larsen, F. L. Bello Garrote +14
Particle- coincidences from the Y()Y and Y()Y reactions were utilized to obtain -ray spectra as function of excitation energy. The…
Level density and gamma-ray strength function in the odd-odd 238Np
Tamás Gábor Tornyi, Magne Guttormsen, Tomas Kvalheim Eriksen +9
The level density and gamma-ray strength function in the quasi-continuum of 238Np has been measured using the Oslo method. The level density function follows closely the constant-t…
Scissors resonance in the quasi-continuum of Th, Pa and U isotopes
M. Guttormsen, L. A. Bernstein, A. Görgen +16
The gamma-ray strength function in the quasi-continuum has been measured for 231-233Th, 232,233Pa and 237-239U using the Oslo method. All eight nuclei show a pronounced increase in…
Evidence for dipole nature of the low-energy enhancement in Fe
A. C. Larsen, N. Blasi, A. Bracco +16
The -ray strength function of Fe has been measured from proton- coincidences for excitation energies up to MeV. The low-energy enhancement in the -ray…
Constant-temperature level densities in the quasi-continuum of Th and U isotopes
M. Guttormsen, B. Jurado, J. N. Wilson +16
Particle-gamma coincidences have been measured to obtain gamma-ray spectra as a function of excitation energy for 231-233Th and 237-239U. The level densities, which were extracted…