A Neutron Detector Having Uniform Sensitivity from 10 Kev to 3 Mev

Hanson, A. O.; McKibben, J.L.

doi:10.1103/physrev.72.673

Cited by 348 publications

(39 citation statements)

References 4 publications

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“…A 226 Ra source was used to calibrate the efficiency and determine the energy nonlinearity of the detector and data acquisition system. In addition, a long counter [17,18] and a forward monitor were used to determine the relative neutron fluences when normalizing spectra at different netron energies. The long counter is positioned at 85 o with respect to the beam direction.…”

Section: A Excitation Functionsmentioning

confidence: 99%

Nuclear structure of Ge76 from inelastic neutron scattering measurements and shell model calculations

et al. 2017

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The low-lying, low-spin levels of 76 Ge were studied with the (n,n ′ γ) reaction. Gamma-ray excitation function measurements were performed at incident neutron energies from 1.6 to 3.7 MeV, and γ-ray angular distributions were measured at neutron energies of 3.0 and 3.5 MeV. From these measurements, level spins, level lifetimes, γ-ray intensities, and multipole mixing ratios were determined. No evidence for a number of previously placed levels was found. Below 3.3 MeV, many new levels were identified, and the level scheme was re-evaluated. The B(E2) values support low-lying band structure. The 2 + mixed-symmetry state has been identified for the first time. A comparison of the level characteristics with large-scale shell model calculations yielded excellent agreement.

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Section: A Excitation Functionsmentioning

confidence: 99%

Nuclear structure of Ge76 from inelastic neutron scattering measurements and shell model calculations

et al. 2017

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“…Neutron yield (neutrons/rad/gram target, integrated over neutron energy) was measured using a "long" counter of the variety suggested by Hanson and McKibben [6]. The neutron detector was a 97% 4He/3% Ar gas counter 35.5 cm long, 1.8 cm in diameter, with a 0.9 mgkrn2 B2O3, enriched to 85% in 1oB, coating on the inside walls.…”

Section: Methodsmentioning

confidence: 99%

Photoneutron source based on a compact 10 MeV betatron

Bell¹,

Chaklov²,

Головков³

1998

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“…These holes allow lower-energy neutrons to penetrate farther into the moderator and prevent the neutrons from escaping from the front surface. This increases the efficiency for the lower-energy neutrons [6]. Figure 4 shows the response function of the LC calculated using the MCNP-4C code [7].…”

Section: Long Countermentioning

confidence: 99%

Neutron fluence monitoring system in mono-energetic neutron fields at FRS / JAEA

Tanimura¹,

Fujii²,

Tsutsumi³

2014

Progress in Nuclear Science and Technology

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Mono-energetic neutron calibration fields were developed from 8 keV to 19 MeV using an accelerator at the Facility of Radiation Standards (FRS). Two kinds of neutron detectors are used for monitoring the neutron fluence at a calibration point. One is the Long Counter placed at the 60 degree angle with respect to the beam line except for the 14.8 and 19 MeV fields where the angle is 90 degree. The other is the 110deg-monitor installed in a collimator at 110 degree angle with respect to the beam line. These two monitors were designed to have flat response to the neutrons from a few keV to a few MeV. The neutron fluence at a calibration point can be evaluated from the counts of the Long Counter with corrections of scattered neutrons. The neutron energy is sensitive to the beam energy especially for the neutrons below a few hundreds of keV. It was found that the beam energy was able to be monitored using the count ratio of two neutron monitors.

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A Neutron Detector Having Uniform Sensitivity from 10 Kev to 3 Mev

Cited by 348 publications

References 4 publications

Nuclear structure of Ge76 from inelastic neutron scattering measurements and shell model calculations

Nuclear structure of Ge76 from inelastic neutron scattering measurements and shell model calculations

Photoneutron source based on a compact 10 MeV betatron

Neutron fluence monitoring system in mono-energetic neutron fields at FRS / JAEA

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