activity
20152023
most citedEnhanced low-energy -decay strength of Ni and its robustness within the shell model

39 citations · 210 across the 14 of their papers we have counts for

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14 papers · 1 filter

nucl-ex2023★ 9 cited

New experimental constraint on the W()W cross section

A. C. Larsen, G. M. Tveten, T. Renstrøm +28

In this work, we present new data on the W() cross sections, utilizing a quasi-monochromatic photon beam produced at the NewSUBARU synchrotron radiation facili…

nucl-ex2022

Evolution of the -ray strength function in neodymium isotopes

M. Guttormsen, K. O. Ay, M. Ozgur +24

The experimental gamma-ray strength functions (gamma-SFs) of 142,144-151Nd have been studied for gamma-ray energies up to the neutron separation energy. The results represent a uni…

nucl-ex2021★ 15 cited

Statistical properties of the well deformed Sm nuclei and the scissors resonance

K. L. Malatji, K. S. Beckmann, M. Wiedeking +18

The Nuclear Level Densities (NLDs) and the -ray Strength Functions (SFs) of Sm have been extracted from (d,p) coincidences using the Oslo method. The experimen…

nucl-ex2020★ 19 cited

Strong enhancement of level densities in the crossover from spherical to deformed neodymium isotopes

M. Guttormsen, Y. Alhassid, W. Ryssens +19

Understanding the evolution of level densities in the crossover from spherical to well-deformed nuclei has been a long-standing problem in nuclear physics. We measure nuclear level…

nucl-ex2019

First evidence of enhanced low-energy -ray strength from thermal neutron capture data

L. Crespo Campo, R. B. Firestone, B. A. Brown +2

The -ray strength function, or average reduced -ray transition probability, is a fundamental input in the calculation of cross sections used to simulate the nucleosyn…

nucl-ex2019★ 12 cited

Restricted spin-range correction in the Oslo Method: The example of nuclear level density and -ray strength function from

F. Zeiser, G. M. Tveten, G. Potel +19

The Oslo Method has been applied to particle- coincidences following the (d,p) reaction to obtain the nuclear level density (NLD) and -ray strength functio…

nucl-ex2019★ 2 cited

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…

nucl-ex2018★ 14 cited

First experimental constraint on the Os reaction rate relevant to -process nucleosynthesis

I. K. B. Kullmann, A. C. Larsen, T. Renstrø m +10

The nuclear level density and -decay strength of Os have been extracted using particle- coincidence data from the Os()Os reaction by mean…

nucl-ex2018★ 39 cited

Enhanced low-energy -decay strength of Ni and its robustness within the shell model

A. C. Larsen, J. E. Midtbø, M. Guttormsen +19

Neutron-capture reactions on very neutron-rich nuclei are essential for heavy-element nucleosynthesis through the rapid neutron-capture process, now shown to take place in neutron-…

nucl-ex2018★ 1 cited

Gamma-widths, lifetimes and fluctuations in the nuclear quasi-continuum

M. Guttormsen, A. C. Larsen, J. E. Midtbø +8

Statistical -decay from highly excited states is determined by the nuclear level density (NLD) and the -ray strength function (SF). These average quantities have been meas…

nucl-ex2017★ 10 cited

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…

nucl-ex2016★ 33 cited

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…

nucl-ex2016★ 22 cited

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…

nucl-ex2015★ 34 cited

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…