Test of the generalized Brink-Axel hypothesis in 
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Guttormsen, M.; Garrote, F. L. Bello; Giacoppo, F.; Görgen, A.; Hadyńska-Klęk, K.; Klintefjord, M.; Larsen, A. C.; Renstrøm, T.; Şahin, E.; Siem, S.; Springer, A.; Tornyi, T.; Tveten, G. M.

doi:10.1103/physrevc.98.054303

Cited by 18 publications

(46 citation statements)

References 24 publications

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“…A primary beam of 86 Kr at 140 MeV per nucleon was impinged on a 9 Be fragmentation target. The resulting products were sent through the A1900 fragment separator [35] to isolate 51 Sc which was delivered to the experimental station. The incoming radioactive ion beam was characterized using standard energy-loss and timeof-flight measurements.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The decay of 51 Sc (Q β = 6.503 MeV) populated highenergy states in the daughter nucleus, 51 Ti. States above the neutron separation energy in 51 Ti (S n = 6.372 MeV) were not observed to be populated. The total γ-ray energy emitted in the decay of the excited 51 Ti to the ground state was measured in SuN and plotted against the energies detected in the individual segments.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Herein, we present the application of both the β-Oslo and traditional Oslo methods to the extraction of the NLD and the γSF of 51 Ti from the 51 Sc → 51 Ti β decay and 50 Ti(d,p) 51 Ti reaction. The resulting NLD and γSF are used to constrain the 50 Ti(n,γ) 51 Ti cross section and compare it to previously measured data. It is demonstrated herein that the β-Oslo technique: (1) is a valid means of determining neutron capture cross sections for short-lived isotopes, (2) agrees with the Oslo technique despite the differences in population mechanism, and (3) provides significantly reduced uncertainties in the (n, γ) cross section as compared to predictions where no data constraints are available, as is the case for many shortlived isotopes.…”

Section: Introductionmentioning

confidence: 99%

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Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Liddick¹,

Larsen²,

Guttormsen³

et al. 2019

Phys. Rev. C

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Numerous scientific fields including astrophysics, nuclear power, and nuclear forensics require a knowledge of basic nuclear properties for large numbers of short-lived, radioactive isotopes far removed from stable nuclei. Neutron-capture cross sections are one such piece of nuclear data where direct measurements are not possible and theoretical predictions can vary by orders of magnitude. A recently developed indirect technique for inferring neutron capture rates, the β-Oslo method, has been introduced but not compared against a known, directly measured neutron capture cross section. To provide this benchmark, two indirect methods based on β decay and charged-particle reactions were used to extract the nuclear level density and γ-ray strength function of 51 Ti. The nuclear level density and γ-ray strength function from the two data sets were found to be equivalent and were used to extract the neutron capture cross section of 50 Ti which agrees with previous direct measurements at high neutron energies. The results demonstrate the validity of the β-Oslo method for extracting neutron capture cross sections of short-lived nuclei and provide a sufficiently small uncertainty to be used in various applications.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Liddick¹,

Larsen²,

Guttormsen³

et al. 2019

Phys. Rev. C

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Restricted spin-range correction in the Oslo method: The example of nuclear level density and γ -ray strength function from Pu239(d,pγ)
Zeiser
¹
,
Tveten
²
,
Potel
³

et al. 2019
Phys. Rev. C
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The Oslo Method has been applied to particle-γ coincidences following the 239 Pu(d,p) reaction to obtain the nuclear level density (NLD) and γ-ray strength function (γSF) of 240 Pu. The experiment was conducted with a 12 MeV deuteron beam at the Oslo Cyclotron Laboratory. The low spin transfer of this reaction leads to a spin-parity mismatch between populated and intrinsic levels. This is a challenge for the Oslo Method as it can have a significant impact on the extracted NLD and γSF. We have developed an iterative approach to ensure consistent results even for cases with a large spin-parity mismatch, in which we couple Green's Function Transfer calculations of the spin-parity dependent population cross-section to the nuclear decay code RAINIER. The resulting γSF shows a pronounced enhancement between 2-4 MeV that is consistent with the location of the low-energy orbital M 1 scissors mode.

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Independent normalization for γ -ray strength functions: The shape method

et al. 2021

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The shape method, a novel approach to obtain the functional form of the γ -ray strength function (γ SF), is introduced. In connection with the Oslo method the slope of the nuclear level density (NLD) and γ SF can be obtained simultaneously even in the absence of neutron resonance spacing data. The foundation of the shape method lies in the primary γ -ray transitions which preserve information on the functional form of the γ SF. The shape method has been applied to 56 Fe, 92 Zr, and 164 Dy, which are representative cases for the variety of situations encountered in typical NLD and γ SF studies. The comparisons of results from the shape method to those from the Oslo method demonstrate that the functional form of the γ SF is retained regardless of nuclear structure details or J π values of the states fed by the primary transitions.

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Test of the generalized Brink-Axel hypothesis in Ni64,65

Cited by 18 publications

References 24 publications

Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Restricted spin-range correction in the Oslo method: The example of nuclear level density and γ -ray strength function from Pu239(d,pγ)
Zeiser
¹
,
Tveten
²
,
Potel
³

et al. 2019
Phys. Rev. C
Self Cite
12
1
8
0
1
View full text Add to dashboard Cite

Independent normalization for γ -ray strength functions: The shape method

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Test of the generalized Brink-Axel hypothesis in Ni64,65

Cited by 18 publications

References 24 publications

Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β -Oslo method

Restricted spin-range correction in the Oslo method: The example of nuclear level density and γ -ray strength function from Pu239(d,pγ)Zeiser1, Tveten2, Potel3 et al. 2019Phys. Rev. CSelf Cite121801View full textAdd to dashboardCite

Independent normalization for γ -ray strength functions: The shape method

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Restricted spin-range correction in the Oslo method: The example of nuclear level density and γ -ray strength function from Pu239(d,pγ)
Zeiser
¹
,
Tveten
²
,
Potel
³

et al. 2019
Phys. Rev. C
Self Cite
12
1
8
0
1
View full text Add to dashboard Cite