dor_id: 4133506

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

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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

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

883.#.#.a: Revistas UNAM

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

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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/1269/1254

100.1.#.a: Vega, P.; Fernández, J.; Gomberoff, L.

524.#.#.a: Vega, P., et al. (1992). Role of cold H+ and He+ ions and thermal anisotropy in the electromagnetic proton cyclotron instability. Geofísica Internacional; Vol. 31 Núm. 2: Abril 1, 1992; 131-134. Recuperado de https://repositorio.unam.mx/contenidos/4133506

245.1.0.a: Role of cold H+ and He+ ions and thermal anisotropy in the electromagnetic proton cyclotron instability

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1992

264.#.1.c: 1992-04-01

653.#.#.a: Inestabilidad protón-ciclotrón; Plasmas fríos; Proton cyclotron instability; Cold plasmas; H and He ions

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/1269

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1269

041.#.7.h: spa

520.3.#.a: A detailed study of the electromagnetic proton cyclotron instability in a plasma containing cold H+ and He+ ions is presented. In the presence of cold He+ ions the unstable spectrum is divided into two regions, LF and HF branches, by a stop band starting at the He+ gyro frequency. By using a semi-cold analytical expression for the convective growth rate we show that in both branches an increase of cold proton concentration shifts the spectrum to lower frequency values. However, an increase in the He+ popUlation shifts the spectrum (1) to lower frequencies in the LF branch and (2) to higher frequencies in the HF branch. This behavior leads to the fact that in the LF branch, the presence of cold H+ and He+ ions slows down the stabilization of the plasma due to decreasing thermal anisotropy; but, in the HF region, this stabilization is strengthened with increasing cold He+ population and is slowed down with increasing cold H+ concentration. Thus, an amplificaqon .of these waves is the result of combining these two effects, first, the shift of the spectrum due to cold ions and, second, the fact that higher frequency waves are the first to be stabilized.doi: https://doi.org/10.22201/igeof.00167169p.1992.31.2.584

773.1.#.t: Geofísica Internacional; Vol. 31 Núm. 2: Abril 1, 1992; 131-134

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: 131-134

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

doi: https://doi.org/10.22201/igeof.00167169p.1992.31.2.584

handle: 4f7752b0d34ef7f1

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

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file_modification_date: 2022-07-24 22:09:38.0

file_creator: P. Vega

file_name: 42ada1193bd2dc212296877bc58ad852d495e6df2910910298dc4cabb5338a8a.pdf

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245.1.0.b: Role of cold H+ and He+ ions and thermal anisotropy in the electromagnetic proton cyclotron instability

last_modified: 2023-06-20 16:00:00

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Artículo

Role of cold H+ and He+ ions and thermal anisotropy in the electromagnetic proton cyclotron instability

Vega, P.; Fernández, J.; Gomberoff, L.

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

Vega, P., et al. (1992). Role of cold H+ and He+ ions and thermal anisotropy in the electromagnetic proton cyclotron instability. Geofísica Internacional; Vol. 31 Núm. 2: Abril 1, 1992; 131-134. Recuperado de https://repositorio.unam.mx/contenidos/4133506

Descripción del recurso

Autor(es)
Vega, P.; Fernández, J.; Gomberoff, L.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Role of cold H+ and He+ ions and thermal anisotropy in the electromagnetic proton cyclotron instability
Fecha
1992-04-01
Resumen
A detailed study of the electromagnetic proton cyclotron instability in a plasma containing cold H+ and He+ ions is presented. In the presence of cold He+ ions the unstable spectrum is divided into two regions, LF and HF branches, by a stop band starting at the He+ gyro frequency. By using a semi-cold analytical expression for the convective growth rate we show that in both branches an increase of cold proton concentration shifts the spectrum to lower frequency values. However, an increase in the He+ popUlation shifts the spectrum (1) to lower frequencies in the LF branch and (2) to higher frequencies in the HF branch. This behavior leads to the fact that in the LF branch, the presence of cold H+ and He+ ions slows down the stabilization of the plasma due to decreasing thermal anisotropy; but, in the HF region, this stabilization is strengthened with increasing cold He+ population and is slowed down with increasing cold H+ concentration. Thus, an amplificaqon .of these waves is the result of combining these two effects, first, the shift of the spectrum due to cold ions and, second, the fact that higher frequency waves are the first to be stabilized.doi: https://doi.org/10.22201/igeof.00167169p.1992.31.2.584
Tema
Inestabilidad protón-ciclotrón; Plasmas fríos; Proton cyclotron instability; Cold plasmas; H and He ions
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

Enlaces