Photoneutron source based on a compact 10 MeV betatron

Bell, Zane W.; Chaklov, V.L.; Головков, В. М.

doi:10.2172/666020

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…[41] In a second case using a 10-MeV electron beam (the bremsstrahlung converter target was not defined), neutron production yields from LiD, Be, depleted U, and natural Pb targets were reported to be 5.2 × 10 7 , 5.7 × 10 7 , 4.7 × 10 7 , and 8.0 × 10 6 neutrons per rad of beam dose. [42] (Because of the dependence on the irradiation parameters above, reported photoneutron yields are normalized to the beam dose rather than electron accelerator's beam current.) Fig.…”

Section: Reactions With Photonsmentioning

confidence: 99%

“…Accelerator-based photoneutron sources have not seen wide scale industrial application but have been proposed for use in a small number of applications. [113][114][115][116] Moderate energy 5-10 MeV electron linacs and smallscale betatrons are the most commonly proposed systems for use in these applications yet higher energy electron sources clearly have potential as well. The intense photon radiation accompanying neutron production in higher-energy systems makes radiation shielding a challenge while also limiting their applicability when radiation measurements must be made but for radiation effects testing these higher energy photoneutron sources serve a valuable role but care must be taken to correctly assess dosimetric quantities.…”

Section: Photoneutron Systemsmentioning

confidence: 99%

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Production and applications of neutrons using particle accelerators

Chichester

2009

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Advances in neutron science have gone hand in hand with the development and of particle accelerators from the beginning of both fields of study. Early accelerator systems were developed simply to produce neutrons, allowing scientists to study their properties and how neutrons interact in matter, but people quickly realized that more tangible uses existed too. Today the diversity of applications for industrial accelerator-based neutron sources is high and so to is the actual number of instruments in daily use is high, and they serve important roles in the fields where they're used. This chapter presents a technical introduction to the different ways particle accelerators are used to produce neutrons, an historical overview of the early development of neutron-producing particle accelerators, a description of some current industrial accelerator systems, narratives of the fields where neutron-producing particle accelerators are used today, and comments on future trends in the industrial uses of neutron producing particle accelerators.

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Section: Reactions With Photonsmentioning

confidence: 99%

Section: Photoneutron Systemsmentioning

confidence: 99%

Production and applications of neutrons using particle accelerators

Chichester

2009

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SSNTD Technique in Photo-Neutron Applications

Sajó-Bohus

Vega-Carrillo²,

Virk

2015

SSP

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Passive Solid State Nuclear Track Detectors (SSNTDs) are a versatile tool for neutron studies as has been shown long ago and several good quality materials are commercially available. They are useful for charged particle detection in the linear energy transfer (LET) range above the threshold value of ~10 keV μm-1. Linacs, operating above 6 MeV up to the energy region where radiotherapy is applied usually up to ~25MeV, induce unwanted photo-neutron field; their spectra shows two components due to reaction dynamics based on evaporation and knock-on mechanisms. Neutrons produced by Linacs are often neglected in health application; however, today it has become necessary to assess the effect on patient, staff and radiation workers. Radiation studies using SSNTDs play a major role in this case. Other fields also take advantage of the passive detectors properties; in fact they are employed with success to measure neutron signals relevant for plasma diagnostics as it was demonstrated at the RFX facility as part of the ITER project. The PADC-NTD techniques provide information on external neutron field values around the RFX-installation during pulsed operation. In any case, converter materials, as charged particles from (n, p) and (n, α) reactions, are required to produce neutron fingerprints through latent tracks. These once etched provide information on neutron fluence spatial values. Track histograms are then employed to determine photo-neutron induced damage in materials as well as radiation dose to both patient and professionally exposed workers. The estimated neutron fluence that can be determined by NTM covers a large range of values, the largest being above 1010(± 12%) neutrons/cm2.

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Photoneutron source based on a compact 10 MeV betatron

Cited by 2 publications

References 2 publications

Production and applications of neutrons using particle accelerators

Production and applications of neutrons using particle accelerators

SSNTD Technique in Photo-Neutron Applications

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