The neutron spectrum from a 5 Ci Am/Li neutron source

Weaver, David R.; Owen, J. G.; Walker, J. P.

doi:10.1016/0167-5087(82)90306-4

Cited by 12 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As in the case of the AmBe source, the spectrum of the neutrons emitted by the AmLi sources is not known. Plausible AmLi energy spectra were taken from the literature [3,29] or derived from the GEANT4 package SaG4n [30,31]. However, SaG4n does not allow the implementation of complex geometries; hence neutron transport through the source encapsulations for the various spectra was performed in G 4 with the "ShieldingLEND" physics list.…”

Section: Jinst 18 P05006mentioning

confidence: 99%

Design and characterization of AmLi neutron sources for the LZ experiment

et al. 2023

View full text Add to dashboard Cite

In this paper we describe the development, testing, and characterization of three low-emission rate AmLi neutron sources. The sources are used to calibrate the nuclear recoil response of the LUX-ZEPLIN (LZ) dark matter experiment. The sources' neutron emission rate was measured using 3He proportional tubes. The sources' gamma emissions were characterized using a high-purity germanium (HPGe) detector. Source-validated Geant4 Monte Carlo simulations allowed to calibrate the Ge and neutron detectors' responses.

show abstract

Section: Jinst 18 P05006mentioning

confidence: 99%

Design and characterization of AmLi neutron sources for the LZ experiment

et al. 2023

View full text Add to dashboard Cite

show abstract

“…As in the case of the AmBe source, the spectrum of the neutrons emitted by the AmLi sources is not known. Plausible AmLi energy spectra were taken from the literature [6,27] or derived from the GEANT4 package SaG4n [28,29]. However, SaG4n does not allow the implementation of complex geometries; hence neutron transport through the source encapsulations for the various spectra was performed in G 4 with the "ShieldingLEND" physics list.…”

Section: Neutron Emission Rate Measurementmentioning

confidence: 99%

Design and characterization of AmLi neutron sources for the LZ experiment

Sazzad¹,

Busenitz²,

Piepke³

et al. 2023

Preprint

View full text Add to dashboard Cite

In this paper we describe the development, testing, and characterization of three lowemission rate AmLi neutron sources. The sources are used to calibrate the nuclear recoil response of the LUX-ZEPLIN (LZ) dark matter experiment. The sources' neutron emission rate was measured using 3 He proportional tubes. The sources' gamma emissions were characterized using a HPGe detector. Source validated G 4 Monte Carlo simulations allowed to calibrate the Ge and neutron detector responses.

show abstract

“…[14][15][16][17][18][19][20] They have also been used to quantify the neutron spectra from 16 radioisotope neutron sources and to evaluate neutron radiation fields for health physics applications. [7,[21][22][23] The 17 best method to evaluate the performance of a neutron spectrometer is to use a charged-particle accelerator to 18 produce calibrated monoenergetic neutron fields of known energy and known intensity across a wide range of 19 energies; an alternate approach is to use the 252 Cf transmission technique to make relative analyses of the 20 performance of a C-S neutron spectrometer. […”

Section: ] 11mentioning

confidence: 99%

“…[37,38] Recognizing the impact of the 19 attenuation data for the nitrogen and carbon measurements, neutron spectrometry may also have application in the 20 field of nuclear treaty verification and transparency with a capability to identify the presence of nitrogen-bearing 21 hydrocarbon attenuating materials near neutron sources. 22 Neutron spectrometry has traditionally been performed using time-of-flight methods using accelerator-23 based pulsed-neutron sources or nuclear reactors with chopper wheels. However, with the successive closure of 24 many facilities suited for these studies there has been a steady decrease in the on-campus study of neutron 25 spectrometry in education.…”

mentioning

confidence: 99%

Fast-neutron spectrometry using a 3He ionization chamber and digital pulse shape analysis

Chichester

Johnson

Seabury

2012

Applied Radiation and Isotopes

View full text Add to dashboard Cite

7Digital pulse shape analysis (dPSA) has been used with a Cuttler-Shalev type 3 He ionization chamber to 8 measure the fast-neutron spectra of a deuterium-deuterium electronic neutron generator, a bare 252 Cf spontaneous 9 fission neutron source, and of the transmitted fast neutron spectra of a 252 Cf source attenuated by water, graphite, 10 liquid nitrogen, and magnesium. Rise-time dPSA has been employed using the common approach for analyzing 11 n + 3 He ĺ 1 H + 3 H ionization events and improved to account for wall-effect and pile-up events, increasing the 12 fidelity of these measurements. Simulations have been performed of the different experimental arrangements and 13 compared with the measurements, demonstrating general agreement between the dPSA-processed fast-neutron 14 spectra and predictions. The fast neutron resonance features of the attenuation cross sections of the attenuating 15 materials are clearly visible within the resolution limits of the electronics used for the measurements, and the 16 potential applications of high-resolution fast-neutron spectrometry for nuclear nonproliferation and safeguards 17 measurements are discussed. 18 19

show abstract

The neutron spectrum from a 5 Ci Am/Li neutron source

Cited by 12 publications

References 1 publication

Design and characterization of AmLi neutron sources for the LZ experiment

Design and characterization of AmLi neutron sources for the LZ experiment

Design and characterization of AmLi neutron sources for the LZ experiment

Fast-neutron spectrometry using a 3He ionization chamber and digital pulse shape analysis

Contact Info

Product

Resources

About