Partial Photoneutron Cross Sections for the Isomeric State<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Ta</mml:mi><mml:none /><mml:mi>m</mml:mi><mml:mprescripts /><mml:none /><mml:mn>180</mml:mn></mml:mmultiscripts></mml:math>

Goko, S.; Utsunomiya, H.; Goriely, Stéphane; Makinaga, A.; Kaihori, T.; Hohara, Sin-ya; Akimune, H.; Yamagata, T.; Lui, Y.‐W.; Toyokawa, Hiroyuki; Koning, A. J.; Hilaire, Stéphane

doi:10.1103/physrevlett.96.192501

Cited by 49 publications

(25 citation statements)

References 18 publications

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“…Photodisintegration cross sections for 181 Ta were measured by using quasimonochromatic γ -ray beams from laser-Compton scattering at the National Institute of Advanced Industrial Science and Technology (AIST) in Japan. Whereas these experimental data for 181 Ta(γ,n) 180 Ta and 181 Ta(γ,n) 180m Ta constrained the production rate of 180m Ta, the uncertainty of the photodisintegration rate from below the neutron-separation energy still remains [9,10].…”

Section: Introductionmentioning

confidence: 91%

“…The origin of 180m Ta, which is the rarest nuclide in the solar system, has been widely discussed over the past 40 years [4][5][6][7][8][9][10][11][12][13][14]. Difficulties in understanding the creation of 180m Ta arise from the various possible elemental production mechanisms, such as the slow (s) or rapid (r) neutron capture processes as well as the γ and ν processes.…”

Section: Introductionmentioning

confidence: 99%

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Dipole strength ofTa181for the evaluation of theTa180stellar neutron capture rate

et al. 2014

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The photoabsorption cross section of 181 Ta up to the neutron-separation energy is deduced using bremsstrahlung produced with an electron beam of 9.6 MeV energy. The analysis of the measured γ -ray spectra includes the quasicontinuum of levels at high energy. Simulations of γ -ray cascades are performed to estimate intensities of inelastic transitions and branching ratios of the ground-state transitions. The resulting photoabsorption cross section shows enhanced dipole strength in the energy range from 5 to 8 MeV, which may be related to a pygmy dipole resonance. The results of the present experiment are compared with predictions of a quasiparticle-randomphase approximation in a deformed basis. A combination of the present experimental data and (γ,n) data is used as an input to the statistical code TALYS applied to calculate cross sections and reaction rates of photonuclear reactions that are important for the nucleosynthesis of 180 Ta.A. MAKINAGA et al. PHYSICAL REVIEW C 90, 044301 (2014)

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Dipole strength ofTa181for the evaluation of theTa180stellar neutron capture rate

et al. 2014

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“…Here, we just mention that the global use of TALYS is divided roughly in two: (a) as a nuclear physics tool for the analysis of experiments and for associated academical and fundamental physics (e.g., astrophysics [2]) purposes; (b) as a nuclear data tool to generate complete sets of data, in e.g., ENDF-6 format, for technological applications such as conventional and innovative power reactors (GEN-IV), accelerator applications and transmutation of radioactive waste, fusion reactors, homeland security, medical isotope production and radiotherapy, and oil-well logging.…”

Section: Introductionmentioning

confidence: 99%

TALYS-1.0

Koning

Hilaire

Duijvestijn

2007

Nd2007

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Abstract. TALYS is software that simulates nuclear reactions which involve neutrons, gamma-rays, protons, deuterons, tritons, helions and alpha-particles, in the 1 keV-200 MeV energy range. A suite of nuclear reaction models has been implemented into a single code system, enabling us to evaluate basically all nuclear reactions beyond the resonance range. A short overview is given of the main nuclear models used. The predictive power of the code is illustrated by comparing calculated results with a few sets of experimental observables. Our aim is to show that TALYS represents a robust computational approach that covers the whole path from fundamental nuclear reaction models to the creation of complete data libraries for nuclear applications. All further info on TALYS is available on the website www.talys.eu. As an important applied example we present SALTY, a nuclear data library for all projectiles, target nuclides and energies in both tabular and ENDF-6 format, that is based entirely on the TALYS nuclear model code.

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“…Above the (γ, n) threshold σ γ has been measured by detecting neutrons following photoabsorption [16]. Apparently, the absorption cross section closely above the threshold for neutron emission is small and accurate data are difficult to obtain for these energies [17].…”

Section: Introductionmentioning

confidence: 99%

Low-energy tail of the giant dipole resonance inMo98andMo100

et al. 2008

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Dipole-strength distributions in the nuclides 98 Mo and 100 Mo up to the neutron-separation energies have been studied in photon-scattering experiments at the bremsstrahlung facility of the Forschungszentrum Dresden-Rossendorf. To determine the dipole-strength distributions up to the neutron-emission thresholds, statistical methods were developed for the analysis of the measured spectra. The measured spectra of scattered photons were corrected for detector response and atomic background by simulations using the code GEANT3. Simulations of γ -ray cascades were performed to correct the intensities of the transitions to the ground state for feeding from higher-lying levels and to determine their branching ratios. The photoabsorption cross sections obtained for 98 Mo and 100 Mo from the present (γ, γ ) experiments are combined with (γ, n) data from literature, resulting in a photoabsorption cross section covering the range from 4 to about 15 MeV of interest for network calculations in nuclear astrophysics. Novel information about the low-energy tail of the giant dipole resonance and its energy dependence is derived. The photoabsorption cross sections deduced from the present photon-scattering experiments are compared with existing data from neutron capture and 3 He-induced reactions.

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Partial Photoneutron Cross Sections for the Isomeric StateTam180

Cited by 49 publications

References 18 publications

Dipole strength ofTa181for the evaluation of theTa180stellar neutron capture rate

Dipole strength ofTa181for the evaluation of theTa180stellar neutron capture rate

TALYS-1.0

Low-energy tail of the giant dipole resonance inMo98andMo100

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