Evaluation of the altitude variation of the cosmic-ray induced environmental neutrons in the Mt. Fuji area

Journal of Nuclear Science and Technology

Volumn 42, Issue 6, 2005, Pages 495-502

  Kowatari, Munehiko ^a,c   Nagaoka, Kazunori ^a   Satoh, Shoji ^a   Ohta, Yuji ^a   Abukawa, Johji ^a   Tachimori, Shoichi ^a   Nakamura, Takashi ^b  

^a Japan Chemical Analysis Center   (Japan)

^b TOHOKU UNIVERSITY   (Japan)

^c JAPAN ATOMIC ENERGY AGENCY   (Japan)

Author keywords

Altitude variation; Bonner Spectrometer; Cosmic ray; Neutron ambient dose equivalent; Neutron energy spectrum; Neutron rem counter

Indexed keywords

ALTITUDE VARIATION; BONNER SPECTROMETER; NEUTRON AMBIENT DOSE EQUIVALENT; NEUTRON ENERGY SPECTRUM; NEUTRON REM-COUNTER;

ELECTRIC POTENTIAL; GEOMAGNETISM; IONIZATION; NEUTRONS; POLYETHYLENES; RHEOLOGY; SPECTROMETERS; SPECTRUM ANALYSIS;

COSMIC RAYS;

EID: 23744505162     PISSN: 00223131     EISSN: None     Source Type: Journal    
DOI: 10.1080/18811248.2004.9726416     Document Type: Article

References (16)

1. United Nations Scientific Committee on the Effects of Atomic Radiation, Sources and Effects of Ionizing Radiation. UNSCEAR 2000 Report to the General Assembly, with Scientific Annexes, Vol. 1, United Nations Publication New York, (2000).
2. T. Nakamura, Y. Uwamino, T. Okubo, et al., “Altitude variation of cosmic-ray neutrons,” Health. Phys., 53[5], 509-517 (1987).
3. M. Matsumoto, M. Furukawa, S. Tokonami, et al., “Distribution of neutron component of cosmic rays with altitude at Mt. Fuji,” Radioisotopes, 44, 33-34, (1995), [in Japanese].
4. K. O’brien, H. A. Sandmeier, G. E. Hansen, et al., “Cosmic ray-induced neutron background sources and fluxes for geometries of air over water, ground, iron, and aluminium,” J. Geophys. Res., 83[A1], 114-120 (1978).
5. M. Florek, J. Masarik, I. Szarka, et al., “Natural neutron fluence rate and the equivalent dose in localities with different elevation and latitude,” Radiat. Prot. Dosim., 67[3], 187-192 (1996).
6. H. Schraube, J. Jakes, A. Sannikov, et al., “The cosmic ray induced neutron spectrum at the summit of the zugspitze (2963m),” Radiat. Prot. Dosim., 70[1-4], 405-408 (1997).
7. P. Goldhagen, M. Reginatto, T. Kniss, et al., “Measurement of the energy spectrum of cosmic-ray induced neutrons abroad an ER-2 high-altitude airplane, '' Nucl. Instrum. Methods A, 476, 42-51 (2002).
8. Y. Uwamino, T. Nakamura, A. Hara, “Two types of multimoderator neutron spectrometers: gamma-ray insensitive type and high-efficiency type,” Nucl. Instrum. Methods A, 239, 299-309 (1985).
9. T. Nunomiya, S. Abe, N. Hirabayashi, et al., “Sequential measurements of cosmic-ray neutron energy spectrum and ambient dose equivalent on the ground,” J. Nucl. Sci. Tech-nol., Suppl. 4 466-469 (2000).
10. M. Baba, M. Takada, T. Iwasaki, et al., “Development of monoenergetic neutron calibration fields between 8keV and 15MeV,” Nucl. Instrum. Methods A, 376, 115-123 (1996).
11. W. N. McElroy, S. Berg, T. Crockett, R. G. Hawkins, A computer-automated Iterative Method for Neutron Flux Spectra Determination by Foil Activation, AFWL-TR-67-41, Air Force Weapons Laboratory, (1967).
12. A. V. Sannikov, E. N. Savitskaya, “Ambient dose equivalent conversion factors for high energy neutrons based on the ICRP 60 recommendations,” Radiat. Prot. Dosim., 70[1-4], 383-386 (1997).
13. A. Ferrari, M. Pelliccioni, M. Pillon, et al., “Fluence to effective dose conversion coefficients for neutrons up to 10 TeV, '' Radiat. Prot. Dosim., 71[3], 165-173 (1997).
14. United Nations Scientific Committee on the Effects of Atomic Radiation, Sources and Effects of Ionizing Radiation. UNSCEAR1993 Report to the General Assembly, with Scientific Annexes, Vol. 1, United Nations Publication New York, (1993).
15. K. Fujimoto, K. O’brien, “Estimation of dose due to cosmic rays in Japan,” Hoken Buturi, 37[4], 325-334 (2002), [in Japanese].
16. A. Bouville, W. M. Lowder, “Human population exposure to cosmic radiation,” Radiat. Prot. Dosim., 24[1/4], 293-299 (1988).