Neutron-induced reaction studies at FIGARO using a spallation source

Rochman, D.; Haight, R. C.; Donnell, John M O'; Devlin, M.; Ethvignot, T.; Granier, T.

doi:10.1016/j.nima.2003.12.026

Cited by 32 publications

(20 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present measurements were carried out at the FI-GARO (Fast neutron-Induced GAmma-Ray Observer) array [18] at WNR/LANSCE. Ethvignot et al [19,20] performed a similar experiment with an earlier version of FIGARO.…”

mentioning

confidence: 99%

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239
Noda
¹
,
Haight
²
,
Nelson
³

et al. 2011
Phys. Rev. C
Self Cite
28
1
22
0
View full text Add to dashboard Cite

mentioning

confidence: 99%

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239
Noda
¹
,
Haight
²
,
Nelson
³

et al. 2011
Phys. Rev. C
Self Cite
28
1
22
0
View full text Add to dashboard Cite

“…An example is for neutron emission spectra from neutrons on natural where 2+ → g.s. gamma rays for the two major isotopes, 58,60 Ni, were unresolved in the experiment [20].…”

Section: Figaromentioning

confidence: 90%

Nuclear data research at the Los Alamos Neutron Science Center

Haight

2007

Nd2007

View full text Add to dashboard Cite

Abstract. The Los Alamos Neutron Science Center is based on an 800-MeV high current proton linear accelerator, which is used to produce intense pulses of neutrons over 16 orders of magnitude in energy from ultra-cold neutrons to neutrons with energies up to 800 MeV. The four separate neutron production areas and the neutron energy ranges at each are: (1) the Weapons Neutron Research facility (0.1 to 800 MeV); (2) the Lujan Center with moderated neutrons (cold -500 keV); (3) the Lead Slowing-Down Spectrometer (0.1 eV to 200 keV); and (4) the Ultracold Neutron Research facility (ultracold). Because of the flexibility of the accelerator, a wide range of neutron source intensities, pulse widths, and intensities is possible. Nuclear data measurements are conducted with the first three of these sources. Present research activities include experiments (with the instruments used) on high-resolution gamma-ray production by neutrons (GEANIE), neutron capture (DANCE), neutron and gamma-ray emission from fission and other reactions (FIGARO), charged-particle emission (NZ), neutron-induced fission (FISSION), and fission on small samples with a Lead Slowing Down Spectrometer (LSDS). With these capabilities, new approaches to studying neutron-induced reactions are yielding information on a wide range of nuclear data: gamma-ray emission including multiplicity and energy distributions, capture-to-fission ratios, transmutation reactions, emission probabilities for charged particles and neutrons, and cross sections on nuclides off the valley of stability. For some of the instruments, reactions can be studied on very small or short-lived samples. Analysis of the accuracy and precision of experiments is now being carried out in cooperation with data evaluators in order to improve the files of data covariances. Furthermore, the data are providing stringent tests of nuclear reaction models. Researchers from other laboratories in the US and from other countries collaborate in or lead many of these studies. The overview, presented here, of recent and on-going nuclear data research highlights several of the unique research opportunities made possible by the LANSCE neutron sources and specialized instrumentation. Possibilities for future advances are outlined.

show abstract

“…This feature could be very useful to understand experimental data coming from a 4 calorimeter-type detector, like Detector of Advanced Neutron Capture Experiment (DANCE) at LANL. The neutron and -ray detector array, FIGARO 22) at LANL, also has a unique capability to explore nuclear reaction mechanisms by measuring a coincidence between neutron and particular -ray emissions. These experimentally observable quantities can be simulated by the Monte Carlo method.…”

Section: Particle and -Ray Correlationmentioning

confidence: 99%

“…The Monte Carlo technique also facilitates new insights into the nuclear reaction, as correlations between different processes can be studied by gating on a particular -ray so as to provide useful information on spin and parity distributions in the continuum state. 21) Coincidence experiments, i.e., a scattered neutron detection gated by a particular -ray transition, will provide an important benchmark of the modeling of nuclear properties (e.g., level densities, to be measured with the neutron and -ray detector array, FIGARO-Fast Neutron Induced Gamma Ray Observer at LANL 22) ). This kind of investigation, in both theory and experiments, will be more important in the near future for acquiring reliable nuclear data.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Simulation for Particle and γ-Ray Emissions in Statistical Hauser-Feshbach Model

Kawano

Talou

Chadwick

et al. 2010

J. Nucl. Sci. Technol.

View full text Add to dashboard Cite

Monte Carlo simulations for particle and -ray emissions from a compound nucleus based on the Hauser-Feshbach statistical theory with pre-equilibrium emission are performed. The simulation yields reliable nuclear-reaction-wise energy spectra, or so-called exclusive spectra, for emitted neutrons and -rays, which are required in particle transport calculations for nuclear applications. The Monte Carlo method is applied to neutron-induced nuclear reactions on 56 Fe, and the results are compared with a traditional deterministic method. The neutron and -ray emission correlation is examined by gating on an 847 keV -ray that is produced by an inelastic scattering process. The partial -ray energy spectra for different -ray multiplicities are inferred using this Monte Carlo method. In addition, we investigate a correlation between two neutrons in the (n,2n) reaction.

show abstract

Neutron-induced reaction studies at FIGARO using a spallation source

Cited by 32 publications

References 20 publications

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239
Noda
¹
,
Haight
²
,
Nelson
³

et al. 2011
Phys. Rev. C
Self Cite
28
1
22
0
View full text Add to dashboard Cite

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239
Noda
¹
,
Haight
²
,
Nelson
³

et al. 2011
Phys. Rev. C
Self Cite
28
1
22
0
View full text Add to dashboard Cite

Nuclear data research at the Los Alamos Neutron Science Center

Monte Carlo Simulation for Particle and γ-Ray Emissions in Statistical Hauser-Feshbach Model

Contact Info

Product

Resources

About

Neutron-induced reaction studies at FIGARO using a spallation source

Cited by 32 publications

References 20 publications

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239Noda1, Haight2, Nelson3 et al. 2011Phys. Rev. CSelf Cite281220View full textAdd to dashboardCite

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239Noda1, Haight2, Nelson3 et al. 2011Phys. Rev. CSelf Cite281220View full textAdd to dashboardCite

Nuclear data research at the Los Alamos Neutron Science Center

Monte Carlo Simulation for Particle and γ-Ray Emissions in Statistical Hauser-Feshbach Model

Contact Info

Product

Resources

About

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239
Noda
¹
,
Haight
²
,
Nelson
³

et al. 2011
Phys. Rev. C
Self Cite
28
1
22
0
View full text Add to dashboard Cite

Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons onU235andPu239
Noda
¹
,
Haight
²
,
Nelson
³

et al. 2011
Phys. Rev. C
Self Cite
28
1
22
0
View full text Add to dashboard Cite