EXPERIMENTAL CROSS SECTIONS FOR LIGHT-CHARGED PARTICLE PRODUCTION INDUCED BY NEUTRONS WITH ENERGIES BETWEEN 25 AND 65 MeV INCIDENT ON OXYGEN

Benck, Sylvie; Slypen, I.; Meulders, Jean‐Pierre; Corcalciuc, V.

doi:10.1006/adnd.1999.0806

Cited by 7 publications

(5 citation statements)

References 17 publications

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“…The results compare well to most of the existing experimental data obtained by integral measurements [20]. Results similar to the ones in the present paper were previously published by us for oxygen [21]. The Table presents experimental …”

Section: Double-differential Cross Sections (D 2 σ/D D E)supporting

confidence: 90%

EXPERIMENTAL CROSS SECTIONS FOR LIGHT CHARGED PARTICLE PRODUCTION INDUCED BY NEUTRONS WITH ENERGIES BETWEEN 25 AND 75 MeV INCIDENT ON CARBON

Slypen

Benck

Meulders

et al. 2000

Atomic Data and Nuclear Data Tables

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Experimental double-differential cross sections (d 2 σ/d d E)for fast neutron-induced production of proton, deuteron, triton, and alpha particle in carbon are reported at several incident neutron energies between 25 and 75 MeV. Angular distributions were measured in the laboratory angular range of 20 • to 160 • . Reliable extrapolated spectra are obtained at very forward (2.5 • and 10 • ) and very backward (170 • and 177.5 • ) angles. Based on these experimental data, energy differential (dσ/d E), angle differential (dσ/d ), and total cross sections (σ T ) are reported for each detected particle. C INTRODUCTIONDue to obvious experimental difficulties, measurements of charged particle production in fast (20 to 80 MeV) neutroninduced reactions are rather scarce. This type of data offers an important experimental base both for fundamental research and for many important applications. These data can be used for testing the nuclear reaction models; they also offer a wealth of information concerning the nuclear structure of the involved nuclei.Applications are particularly important in the case of light target nuclei such as carbon and oxygen. Essential information can be obtained for use in neutron dosimetry and radiobiology. A detailed knowledge of cross sections makes it possible to evaluate the contribution to charged particle production of a given element as a constituent of human tissue [1,2] in clinical applications.With the advent of the new accelerator-driven technologies, knowledge of neutron-induced reactions above 20 MeV may also play an imporant role in projects such as the transmutation of radioactive waste or alternative nuclear energy production. Experimental MethodsExperimental data were obtained at the fast neutron facility of the Louvain-la-Neuve cyclotron, CYCLONE. An accelerated incident proton beam is focused on a 3-mm-thick natural lithium target. With a beam current of 10 −5 A, about 10 6 neutrons/s are available at the location of our reaction chamber (about 3.3 m downstream of the lithium target). The resulting neutron energy spectrum at 0 • consists of a welldefined peak (2 MeV full-width-at-half-maximum) containing about 50% of the neutrons, plus a flat continuum of low energy neutrons (inset in Fig. 1). In the main neutron peak there are about 10 times more neutrons/MeV than in the low neutron energy continuum [3][4][5].The measurements were done with an elemental carbon target (5 × 5 cm 2 surface and 1 mm thick). Four charged particle detector telescopes were used simultaneously. Each of them consists of a E detector (NE102 plastic scintillator) and an E detector (CsI(Tl) crystal). The E detector can stop up to 80 MeV protons. A coincidence is required between E and E detectors in order to suppress an important part of the background present in such type of experiments [6,7]. The collimation system of each charged particle detector telescope had an angular opening between 2 • and 3 • .Protons and deuterons recoiling from, respectively, a polypropylene and a deuterated polypropylene targ...

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Section: Double-differential Cross Sections (D 2 σ/D D E)supporting

confidence: 90%

EXPERIMENTAL CROSS SECTIONS FOR LIGHT CHARGED PARTICLE PRODUCTION INDUCED BY NEUTRONS WITH ENERGIES BETWEEN 25 AND 75 MeV INCIDENT ON CARBON

Slypen

Benck

Meulders

et al. 2000

Atomic Data and Nuclear Data Tables

Self Cite

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show abstract

“…The results compare well with some of the exist-ing experimental data obtained by microdosimetric integral measurements. The present work complements earlier results on oxygen [15] and carbon [16] EXPLANATION OF TABLE TABLE. Light…”

Section: Double-differential Cross Sections (D 2 σ/D De) Andsupporting

confidence: 90%

Experimental cross sections for light-charged particle production induced by neutrons with energies between 25 and 65 MeV incident on aluminum

Benck

Slypen

Meulders

et al. 2001

Atomic Data and Nuclear Data Tables

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Experimental double-differential cross sections (d 2 σ /d d E) for fast neutron-induced proton, deuteron, triton, and alpha-particle production on aluminum are reported, at several incident neutron energies between 25 and 65 MeV, for outgoing particle energies above the experimental energy thresholds. Angular distributions were measured at laboratory angles between 20 • and 160 • . Reliable extrapolated spectra are derived for very forward (2.5 • and 10 • ) and very backward angles (170 • and 177.5 • ). Based on these experimental data, energydifferential (dσ /d E), angle-differential (dσ /d ), and total production cross sections (σ T ) are reported for each outgoing particle. C

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“…The new data were measured at the Los Alamos Neutron Science Center (LANSCE) [3] and at Louvain-la-Neuve in Belgium [4][5][6][7][8]. At LANSCE, the neutron beam was a white source extending up to 50 MeV, and data are available for incident energies of 5 to 50 MeV.…”

Section: Datamentioning

confidence: 99%

“…Comparison between calculation and experiment for ͑n, xp͒ reactions at higher incident energies. The solid points show the data from Louvain-la-Neuve [4][5][6][7][8] at 37.5± 1.5, 49± 2, and 62.7± 2 MeV given in the laboratory system. The open points show the LANSCE data [3] for 28 Si at 38± 1 and 50± 1 MeV and the U.C.…”

Section: Acknowledgementsmentioning

confidence: 99%

Surface effects in preequilibrium reactions of incident neutrons

Kalbach

2004

Phys. Rev. C

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Recent ͑n, xp͒ continuum spectra at incident energies of 28 to 63 MeV have been used to expand an earlier study at lower neutron energies of the amount of surface localization of the initital target-projectile interaction. The ͑n, xp͒ data show a reduction in surface localization for heavy targets-a trend that grows with increasing bombarding energy. This target mass dependence is not evident in ͑n, xn͒ reactions up to 26 MeV and should be verified with additional heavy target ͑n, xp͒ data as well as ͑n, xn͒ data at higher bombarding energies. It can be described and included in model calculations in terms of a difference in surface localization between initial nn and np interactions.

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EXPERIMENTAL CROSS SECTIONS FOR LIGHT-CHARGED PARTICLE PRODUCTION INDUCED BY NEUTRONS WITH ENERGIES BETWEEN 25 AND 65 MeV INCIDENT ON OXYGEN

Cited by 7 publications

References 17 publications

EXPERIMENTAL CROSS SECTIONS FOR LIGHT CHARGED PARTICLE PRODUCTION INDUCED BY NEUTRONS WITH ENERGIES BETWEEN 25 AND 75 MeV INCIDENT ON CARBON

EXPERIMENTAL CROSS SECTIONS FOR LIGHT CHARGED PARTICLE PRODUCTION INDUCED BY NEUTRONS WITH ENERGIES BETWEEN 25 AND 75 MeV INCIDENT ON CARBON

Experimental cross sections for light-charged particle production induced by neutrons with energies between 25 and 65 MeV incident on aluminum

Surface effects in preequilibrium reactions of incident neutrons

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