Intensity variation of gamma rays due to water concentrations on the lunar surface

K. Iwabuchi; N. Yamashita; S. Kobayashi; K. Hayatsu; M. Hareyama; Y. Karouji; K. Sakurai; Nobuyuki Hasebe

Intensity variation of gamma rays due to water concentrations on the lunar surface

K. Iwabuchi, N. Yamashita, S. Kobayashi, K. Hayatsu, M. Hareyama, Y. Karouji, K. Sakurai, Nobuyuki Hasebe

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Fluxes of gamma rays emitted from the lunar surface consisting from ferroan anorthosite with various concentration of water (H₂O) were calculated with Geant4. They are useful to the current and future lunar missions for the projects to search for the existence of water in the lunar polar regions with a gamma-ray spectrometer. The result thus obtained indicates that the flux of gamma-rays with 2223 keV due to the reactions ¹H(n, γ)²D has a monotonous dependence on the concentration of HzO from 0.1 to 20 wt% and the flux of 4934 keV gamma-rays due to the reactions ²⁸Si(n, y)²⁹Si is remarkably correlated with the abundance oh H₂O. The variation of these gamma-ray fluxes dependent on the concentration of H₂O is also discussed with the neutron density profile in the lunar subsurface.

Original language	English
Title of host publication	Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 10th Conference
Pages	829-833
Number of pages	5
Publication status	Published - 2008
Externally published	Yes
Event	International Conference on Advanced Technology and Particle Physics, ICATPP 2007 - Como Duration: 2007 Oct 8 → 2007 Oct 12

Other

Other	International Conference on Advanced Technology and Particle Physics, ICATPP 2007
City	Como
Period	07/10/8 → 07/10/12

ASJC Scopus subject areas

Astronomy and Astrophysics
Nuclear and High Energy Physics

Cite this

Iwabuchi, K, Yamashita, N, Kobayashi, S, Hayatsu, K, Hareyama, M, Karouji, Y, Sakurai, K & Hasebe, N 2008, Intensity variation of gamma rays due to water concentrations on the lunar surface. in Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 10th Conference. pp. 829-833, International Conference on Advanced Technology and Particle Physics, ICATPP 2007, Como, 07/10/8.

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title = "Intensity variation of gamma rays due to water concentrations on the lunar surface",

abstract = "Fluxes of gamma rays emitted from the lunar surface consisting from ferroan anorthosite with various concentration of water (H2O) were calculated with Geant4. They are useful to the current and future lunar missions for the projects to search for the existence of water in the lunar polar regions with a gamma-ray spectrometer. The result thus obtained indicates that the flux of gamma-rays with 2223 keV due to the reactions 1H(n, γ)2D has a monotonous dependence on the concentration of HzO from 0.1 to 20 wt% and the flux of 4934 keV gamma-rays due to the reactions 28Si(n, y)29Si is remarkably correlated with the abundance oh H2O. The variation of these gamma-ray fluxes dependent on the concentration of H2O is also discussed with the neutron density profile in the lunar subsurface.",

author = "K. Iwabuchi and N. Yamashita and S. Kobayashi and K. Hayatsu and M. Hareyama and Y. Karouji and K. Sakurai and Nobuyuki Hasebe",

year = "2008",

language = "English",

isbn = "9812819088",

pages = "829--833",

booktitle = "Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 10th Conference",

note = "International Conference on Advanced Technology and Particle Physics, ICATPP 2007 ; Conference date: 08-10-2007 Through 12-10-2007",

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TY - GEN

T1 - Intensity variation of gamma rays due to water concentrations on the lunar surface

AU - Iwabuchi, K.

AU - Yamashita, N.

AU - Kobayashi, S.

AU - Hayatsu, K.

AU - Hareyama, M.

AU - Karouji, Y.

AU - Sakurai, K.

AU - Hasebe, Nobuyuki

PY - 2008

Y1 - 2008

N2 - Fluxes of gamma rays emitted from the lunar surface consisting from ferroan anorthosite with various concentration of water (H2O) were calculated with Geant4. They are useful to the current and future lunar missions for the projects to search for the existence of water in the lunar polar regions with a gamma-ray spectrometer. The result thus obtained indicates that the flux of gamma-rays with 2223 keV due to the reactions 1H(n, γ)2D has a monotonous dependence on the concentration of HzO from 0.1 to 20 wt% and the flux of 4934 keV gamma-rays due to the reactions 28Si(n, y)29Si is remarkably correlated with the abundance oh H2O. The variation of these gamma-ray fluxes dependent on the concentration of H2O is also discussed with the neutron density profile in the lunar subsurface.

AB - Fluxes of gamma rays emitted from the lunar surface consisting from ferroan anorthosite with various concentration of water (H2O) were calculated with Geant4. They are useful to the current and future lunar missions for the projects to search for the existence of water in the lunar polar regions with a gamma-ray spectrometer. The result thus obtained indicates that the flux of gamma-rays with 2223 keV due to the reactions 1H(n, γ)2D has a monotonous dependence on the concentration of HzO from 0.1 to 20 wt% and the flux of 4934 keV gamma-rays due to the reactions 28Si(n, y)29Si is remarkably correlated with the abundance oh H2O. The variation of these gamma-ray fluxes dependent on the concentration of H2O is also discussed with the neutron density profile in the lunar subsurface.

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M3 - Conference contribution

AN - SCOPUS:84885935216

SN - 9812819088

SN - 9789812819086

SP - 829

EP - 833

BT - Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 10th Conference

T2 - International Conference on Advanced Technology and Particle Physics, ICATPP 2007

Y2 - 8 October 2007 through 12 October 2007

ER -

Intensity variation of gamma rays due to water concentrations on the lunar surface

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