GB/T 41206-2021Space environment (natural and artificial) - Cosmic ray and solar energetic particle penetration inward the magnetosphere - Method of determination of the effective vertical cut-off rigidity (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
December 31, 2021
Implementation date
July 1, 2022
Scope
GB/T 41206-2021 (Space environment (natural and artificial) - Cosmic ray and solar energetic particle penetration inward the magnetosphere - Method of determination of the effective vertical cut-off rigidity) is available as an English-translated PDF.
GB/T 41206-2021 is the Chinese standard "Space environment (natural and artificial) - Cosmic ray and solar energetic particle penetration inward the magnetosphere - Method of determination of the effective vertical cut-off rigidity".
Its scope clause reads: This document describes the effective vertical cut-off stiffness for charged particles in near-Earth space and specifies the main requirements for its calculation: in Appendix A In , a typical example is used to verify the calculation method: This document is suitable for developing geomagnetic cut-off stiffness calculation models based on different geomagnetic field models [1]: The geomagnetic cut-off stiffness calculation model is used for Determine the flow of charged particles penetrating the Earth's magnetosphere, and test and estimate its impact on spacecraft and other equipment: This document is suitable for the calculation of cosmic ray charged particles (galactic cosmic rays, solar cosmic rays and anomalous cosmic rays) in arbitrary components with large stiffness Transmission in the geomagnetic field of 0:2GV particles: The main objectives for determining the normalization of the effective perpendicular geomagnetic cut-off stiffness are as follows: --- Provide an explicit procedure to calculate the geomagnetic cut-off stiffness within the Earth's magnetosphere reflecting geomagnetic disturbances and local time dependence; --- Provide a means of estimating charged particle fluxes for space experimental missions to interpret and analyze the effects of charged particles; ---Provide a method for effectively calculating the transfer function of the geomagnetic field in low-altitude spacecraft orbits; --- Use independent in-orbit interplanetary particle flux data to determine the impact of solar energy particles on spacecraft equipment and astronauts:. Its clauses include terms and definitions.
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Document preview — GB/T 41206-2021
National Standard of the People's Republic of China
- Classification
- V 04
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 General Concepts and Assumptions
- 5 Model Requirements
- Appendix A (Informative) Effective Vertical Cutoff Stiffness Determination Procedure
- Appendix B (Informative) Introduction to Calculation Results
1 Scope
This document describes the effective vertical cut-off stiffness for charged particles in near-Earth space and specifies the main requirements for its calculation: in Appendix A
In , a typical example is used to verify the calculation method:
This document is suitable for developing geomagnetic cut-off stiffness calculation models based on different geomagnetic field models [1]: The geomagnetic cut-off stiffness calculation model is used for
Determine the flow of charged particles penetrating the Earth's magnetosphere, and test and estimate its impact on spacecraft and other equipment:
This document is suitable for the calculation of cosmic ray charged particles (galactic cosmic rays, solar cosmic rays and anomalous cosmic rays) in arbitrary components with large stiffness
Transmission in the geomagnetic field of 0:2GV particles: The main objectives for determining the normalization of the effective perpendicular geomagnetic cut-off stiffness are as follows:
--- Provide an explicit procedure to calculate the geomagnetic cut-off stiffness within the Earth's magnetosphere reflecting geomagnetic disturbances and local time dependence;
--- Provide a means of estimating charged particle fluxes for space experimental missions to interpret and analyze the effects of charged particles;
---Provide a method for effectively calculating the transfer function of the geomagnetic field in low-altitude spacecraft orbits;
--- Use independent in-orbit interplanetary particle flux data to determine the impact of solar energy particles on spacecraft equipment and astronauts:
2 Normative references
There are no normative references in this document:
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1 internal (main) magnetic field
The magnetic field generated by the Earth's core:
Note 1: See ISO 16695:
Note 2: Can be represented by the International Geomagnetic Reference Field (IGRF) model:
3:2
International Geomagnetic Reference Field
IGRFmodel IGRFmodel
The International Geomagnetic Reference Field describes the endogenous magnetic field in the form of spherical harmonics:
Note 1: See reference [2]:
Note 2: The time variation of the expansion coefficient is very small:
Note 3: The International Association of Geomagnetism and Upper-Air Physics (IAGA) is responsible for the development and revision of the IGRF model, and the coefficients are revised every 5 years: This document does not discuss endogenous magnetic field:
3:3 external (magnetospheric) magnetic field
The magnetic field generated by the source current of the magnetosphere: […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.
Referenced standards
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