Development of a portable isotropic neutron spectrometer

Selwood, Mark; Monk, Stephen

doi:10.1016/j.apradiso.2011.12.010

Cited by 3 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However the design of many of these instruments relies on 3 He, which has gone into short supply in the last ten years following increased concern over nuclear security, following the events of September 2001 [12]. Work has begun to attempt to develop these designs with alternatives to the hard to source 3 He [13], however many of these methods of detection remain in their early stages of development. A passive spectrometer for workplace monitoring with a quasi-isotropic response to neutrons, from thermal to fast energies, was designed by G6mes Ros et al [14].…”

Section: Single Bonner Sphere Spectrometersmentioning

confidence: 98%

Critical review of directional neutron survey meters

Balmer¹,

Gamage²,

Taylor³

2013

2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications (ANIMM

View full text Add to dashboard Cite

Abst ract-Having been overlooked for many years, research is now starting to take into account the directional distribution of the neutron work place field. The impact of not taking this into account has led to overly conservative estimates of dose in neutron workplace fields. This paper provides a critical review of this existing research into directional survey meters which could improve these estimates of dose. Instruments which could be adapted for use as directional neutron survey meters are also considered within this review. Using Monte-Carlo techniques, two of the most promising existing designs are evaluated; a boron doped liquid scintillator and a multi-detector directional spec trometer. As an outcome of these simulations, possible adaptations to these instruments are suggested with a view to improving the portability of the instrument.

show abstract

Section: Single Bonner Sphere Spectrometersmentioning

confidence: 98%

Critical review of directional neutron survey meters

Balmer¹,

Gamage²,

Taylor³

2013

2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications (ANIMM

View full text Add to dashboard Cite

show abstract

Section: Single Bonner Sphere Spectrometersmentioning

confidence: 99%

Critical review of directional neutron survey meters

Balmer¹,

Gamage²,

Taylor³

2014

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

Having been overlooked for many years, research is now starting to take into account the directional distribution of the neutron work place field. The impact of not taking this into account has led to overly conservative estimates of dose in neutron workplace fields. This paper provides a critical review of this existing research into directional survey meters which could improve these estimates of dose. Instruments which could be adapted for use as directional neutron survey meters are also considered within this review. Using Monte-Carlo techniques, two of the most promising existing designs are evaluated; a boron-doped liquid scintillator and a multi-detector directional spectrometer. As an outcome of these simulations, possible adaptations to these instruments are suggested with a view to improving the portability of the instrument.

show abstract

“…When radiation field are neutrons, it is essential to measure the neutron spectrum because the biological effects strongly depend on neutron energy (IshakBoushaki et al, 2012), in this aim recently new neutron spectrometers have been developed (Selwood and Monk, 2012;Gómez-Ros, et al, 2011;Gómez-Ros et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Neutron features at the UPM neutronics hall

Vega-Carrillo

Gallego

Lorente

et al. 2012

Applied Radiation and Isotopes

View full text Add to dashboard Cite

HIGHLIGHTS• Neutron spectra and ambient dose equivalent, of a neutronics hall has been estimated.• Using Monte Carlo methods a detailed model of the hall and the new Al-made measuring bench were used to estimate neutron spectra and H*(10).• Neutron spectra were measured using a Bonner sphere spectrometer along the measuring bench, neutron spectra were used to estimate the H* (10) and to calculate the total fluence rate.• H*(10) was also measured using the neutron area monitor LB 6411 and compared with values obtained in the Monte Carlo calculations.• Total fluence rate was fitted to the semiempirical model. ABSTRACTThe neutronics hall of the Nuclear Engineering Department at the Polytechnical University of Madrid has been characterized. The neutron spectra and the ambient dose equivalent produced by an 241 AmBe source were measured at various source-to-detector distances on the new bench. Using Monte Carlo methods a detailed model of the neutronics hall was designed, and neutron spectra and the ambient dose equivalent were calculated at the same locations where measurements were carried out. A good agreement between measured and calculated values was found.

show abstract

Development of a portable isotropic neutron spectrometer

Cited by 3 publications

References 8 publications

Critical review of directional neutron survey meters

Critical review of directional neutron survey meters

Critical review of directional neutron survey meters

Neutron features at the UPM neutronics hall

Contact Info

Product

Resources

About