dor_id: 4141279

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1708/1863

100.1.#.a: Wittry, D. B; Arrhenius, G.; Cohen, L. H.

524.#.#.a: Wittry, D. B, et al. (1961). Determination of surface composition of the moon from a lunar satellite. Geofísica Internacional; Vol. 1 Núm. 4: Octubre 1, 1961; 95-106. Recuperado de https://repositorio.unam.mx/contenidos/4141279

245.1.0.a: Determination of surface composition of the moon from a lunar satellite

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1961

264.#.1.c: 1961-10-01

653.#.#.a: Luna; Satélite; Rayos X; Exploración lunar; Moon; Satellite; X-rays; Lunar Exploration

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1708

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1708

041.#.7.h: spa

520.3.#.a: The long·range scientific merits of determining the variations in chemical composition over the surface of the Moon are discussed. Possible methods are reviewed for obtaining continuous measurements of atomic concentrations in the lunar surface from a satellite in orbit around the Moon. It is concluded that the characteristic X.radiation of the lunar surface, excited by corpuscular radiation from the Sun during active periods, offers the most promising source of information on variation in concentration or the major elements. ince it is expected that at least one of the lunar probes will cnrry an a gamma-ray spectrograph, examination or x.radiation from the Moon"s surface will make further use or equipment already exjsting in the satellite. Thick target yields or X-radiation are computed for the range or elements concerned and at diflerent proton fluxes. The counting rate and spatial resolution obtainable from instrumentation in orbit at different altitudes are investigated in terms of relative standard error. Making a conservative calculation but neglecting back·ground, a resolution of 95 Km (diameter of Copernicus" Crater) is estimated at an altitude of 400 Km with 90 per cent confidence of the counting statistics at a flux or 104 protons/ sec. At lower altitudes or higher proton flux, the resolution will be considerably improved. The critical importance of background problems is indicated and possible approaches to solution outlined.

773.1.#.t: Geofísica Internacional; Vol. 1 Núm. 4: Octubre 1, 1961; 95-106

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 95-106

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.2954436xe.1961.1.4.1708

handle: 00b98b322e8f073c

harvesting_date: 2023-06-20 17:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2023-04-20 16:58:23.0

file_modification_date: 2023-04-20 20:49:53.0

file_creator: D. B. Wittry

file_name: e7b76c8f9c86436c0c98ffa8214a9af15eb8770fab23d8489c4c22b055f66fa3.pdf

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245.1.0.b: Determinación de la composición superficial de la luna desde un satélite lunar

last_modified: 2023-06-20 17:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

license_type: by-nc-sa

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Artículo

Determination of surface composition of the moon from a lunar satellite

Wittry, D. B; Arrhenius, G.; Cohen, L. H.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Wittry, D. B, et al. (1961). Determination of surface composition of the moon from a lunar satellite. Geofísica Internacional; Vol. 1 Núm. 4: Octubre 1, 1961; 95-106. Recuperado de https://repositorio.unam.mx/contenidos/4141279

Descripción del recurso

Autor(es)
Wittry, D. B; Arrhenius, G.; Cohen, L. H.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Determination of surface composition of the moon from a lunar satellite
Fecha
1961-10-01
Resumen
The long·range scientific merits of determining the variations in chemical composition over the surface of the Moon are discussed. Possible methods are reviewed for obtaining continuous measurements of atomic concentrations in the lunar surface from a satellite in orbit around the Moon. It is concluded that the characteristic X.radiation of the lunar surface, excited by corpuscular radiation from the Sun during active periods, offers the most promising source of information on variation in concentration or the major elements. ince it is expected that at least one of the lunar probes will cnrry an a gamma-ray spectrograph, examination or x.radiation from the Moon"s surface will make further use or equipment already exjsting in the satellite. Thick target yields or X-radiation are computed for the range or elements concerned and at diflerent proton fluxes. The counting rate and spatial resolution obtainable from instrumentation in orbit at different altitudes are investigated in terms of relative standard error. Making a conservative calculation but neglecting back·ground, a resolution of 95 Km (diameter of Copernicus" Crater) is estimated at an altitude of 400 Km with 90 per cent confidence of the counting statistics at a flux or 104 protons/ sec. At lower altitudes or higher proton flux, the resolution will be considerably improved. The critical importance of background problems is indicated and possible approaches to solution outlined.
Tema
Luna; Satélite; Rayos X; Exploración lunar; Moon; Satellite; X-rays; Lunar Exploration
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

Enlaces