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dc.contributor.authorW. Nuntiyakulen_US
dc.contributor.authorA. Sáizen_US
dc.contributor.authorD. Ruffoloen_US
dc.contributor.authorP. S. Mangearden_US
dc.contributor.authorP. Evensonen_US
dc.contributor.authorJ. W. Bieberen_US
dc.contributor.authorJ. Clemen_US
dc.contributor.authorR. Pyleen_US
dc.contributor.authorM. L. Duldigen_US
dc.contributor.authorJ. E. Humbleen_US
dc.date.accessioned2022-10-16T07:32:50Z-
dc.date.available2022-10-16T07:32:50Z-
dc.date.issued2021-07-02en_US
dc.identifier.issn18248039en_US
dc.identifier.other2-s2.0-85127504809en_US
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85127504809&origin=inwarden_US
dc.identifier.urihttp://cmuir.cmu.ac.th/jspui/handle/6653943832/77532-
dc.description.abstractNeutron monitors of standard design (IGY or NM64) are employed world-wide to study variations in the flux of galactic cosmic rays and solar energetic particles in the GeV range. The design minimizes detector response to neutrons below ∼10 MeV produced by cosmic ray interactions in the ambient medium. Increasingly, however, such neutrons are of interest as a means of obtaining spectral information on cosmic rays, for studies of soil moisture, and for nuclear threat detection. Bare neutron counters, a type of lead-free neutron monitor, can detect such neutrons, but comparatively little work has been done to characterize the dependence of their count rate on cutoff rigidity. We analyze data from three bare neutron counters operated on a ship together with a 3-tube NM64 monitor from November, 1995 to February, 1996 over a wide range of magnetic latitude, i.e., a latitude survey. The bare counter design used foamed-in-place polyurethane insulation to keep the temperature uniform and to some extent moderate high-energy neutrons. When the ship was near land, the bare/NM64 count rate ratio was dramatically higher. Considering only data from open sea, the bare and NM64 pressure coefficients are not significantly different. We determine the response function of these bare counters, which is weighted to Galactic cosmic rays of lower energy than the NM64. This measurement of the response function may improve determination of the spectral index of solar energetic particles and Galactic cosmic rays from a comparison of bare and NM64 count rates.en_US
dc.subjectMultidisciplinaryen_US
dc.titleBare Neutron Counter and Neutron Monitor Response to Cosmic Rays during a 1995 Latitude Surveyen_US
dc.typeConference Proceedingen_US
article.title.sourcetitleProceedings of Scienceen_US
article.volume358en_US
article.stream.affiliationsUniversity of Delawareen_US
article.stream.affiliationsUniversity of Tasmaniaen_US
article.stream.affiliationsMahidol Universityen_US
article.stream.affiliationsChiang Mai Universityen_US
article.stream.affiliationsNational Astronomical Research Institute of Thailanden_US
Appears in Collections:CMUL: Journal Articles

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