91 citations · 841 across the 26 of their papers we have counts for
26 papers
Photoneutron reactions on Ho and Tm in the giant dipole resonance region
I. Gheorghe, S. Goriely, K. Stopani +19
Photoneutron reactions were investigated for the deformed Ho and Tm nuclei from the vicinity of the neutron emission threshold up to 40~MeV, well above the gi…
Statistical and non-statistical -decay properties of Zn
A. C. Larsen, M. Guttormsen, T. K. Eriksen +23
We present a study on the -decay properties of Zn using the Oslo method on Zn() data combined with Zn cross-section measurements at the…
Nuclear level densities and ray strength functions of Sn isotopes studied with the Oslo method
M. Markova, A. C. Larsen, G. M. Tveten +13
The Sn isotopes have been studied with (), (), and () reactions to extract the nuclear level densities (NLDs) and -ray strength fun…
Advancements of -ray spectroscopy of isotopically identified fission fragments with AGATA and VAMOS++
A. Lemasson, J. Dudouet, M. Rejmund +3
-ray spectroscopy of fission fragments is a powerful method for studies of nuclear structure properties. Recent results on the spectroscopy of fission fragments, using the combi…
Comprehensive test of the Brink-Axel hypothesis in the energy region of the pygmy dipole resonance
M. Markova, P. von Neumann-Cosel, A. C. Larsen +22
The validity of the Brink-Axel hypothesis, which is especially important for numerous astrophysical calculations, is addressed for 116,120,124Sn below the neutron separation energy…
Impact of restricted spin-ranges in the Oslo Method: The example of (d,p)
F. Zeiser, G. Potel, G. M. Tveten +18
In this paper we present the first systematic analysis of the impact of the populated vs. intrinsic spin distribution on the nuclear level density and -ray strength function ret…
Understanding the Low-Energy Enhancement of the -ray Strength Function of Fe
M. D. Jones, A. O. Macchiavelli, M. Wiedeking +27
A model-independent technique was used to determine the -ray Strength Function (SF) of Fe down to -ray energies less than 1 MeV for the first time with GRETINA usin…
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*…
Validity of the generalized Brink-Axel hypothesis in Np
M. Guttormsen, A. C. Larsen, A. Görgen +4
We have analyzed primary -ray spectra of the odd-odd Np nucleus extracted from Np()Np coincidence data measured at the Oslo Cyclotron Laboratory. T…
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…
Low-energy enhancement in the γ-ray strength functions of Ge
T. Renstrøm, H. -T. Nyhus, H. Utsumoniya +22
The -ray strength functions and level densities of Ge have been extracted up to the neutron separation energy S from particle- coincidence data using the Oslo m…
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…
Pygmy resonance and low-energy enhancement in the -ray strength functions of Pd~isotopes
Tomas Kvalheim Eriksen, Hilde-Therese Nyhus, Magne Guttormsen +8
An unexpected enhancement in the -ray strength function, as compared to the low energy tail of the Giant Dipole Resonance (GDR), has been observed for Sc, Ti, V, Fe and Mo isoto…
Observation of double pygmy resonances in Pt and enhanced astrophysical reaction rates
F. Giacoppo, F. L. Bello Garrote, T. K. Eriksen +12
Our measurements of Pt -strength functions show a double-humped enhancement in the MeV region. For the first time, the detailed shape of these resonances…
Neutron-skin thickness of Pb, and symmetry-energy constraints from the study of the anti-analog giant dipole resonance
A. Krasznahorkay, M. Csatlós, L. Csige +12
The Pb(,) Pb reaction at a beam energy of 30 MeV has been used to excite the anti-analog of the giant dipole resonance (AGDR) and to measure its -de…
Transitional strength in Cd isotopes
A. C. Larsen, I. E. Ruud, A. Bürger +12
The level densities and -ray strength functions of Cd have been extracted from particle- coincidence data using the Oslo method. The level densities are i…
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…
High-spin structure in K
P. -A. Söderström, F. Recchia, J. Nyberg +74
High-spin states of K have been populated in the fusion-evaporation reaction C(Si,np)K and studied by means of -ray spectroscopy techniques using one…
Observation of large scissors resonance strength in actinides
M. Guttormsen, L. A. Bernstein, A. Bürger +8
The orbital M1-scissors resonance (SR) has been measured for the first time in the quasi-continuum of actinides. Particle-gamma coincidences are recorded with deuteron and 3He indu…
Observation of Positive-Parity Bands in Pd and Pd: Enhanced -Softness
E. A. Stefanova, S. Lalkovski, A. Korichi +16
The neutron-rich nuclei Pd and Pd were produced as fission fragments following the Si + Er reaction at 142 MeV. Using the identification based on the…