Solar particle event dose and dose-rate distributions: parameterization of dose–time profiles, with subsequent dose-rate analysis

Solar particle event dose and dose-rate distributions: parameterization of dose–time profiles, with subsequent dose-rate analysis

Calculations of total dose and equivalent dose as functions of time, as well as dose-rate and equivalent dose rate since event start are presented for fifteen of the larger solar particle events that occurred during the period between November 1987 and August 1991. The doses, dose-equivalents, and r...

Full description

Saved in:
Bibliographic Details
Published in:Radiation measurements Vol. 30; no. 3; pp. 393 - 400
Main Authors: Zapp, E.Neal, Ramsey, Chester R, Townsend, Lawrence W, Badhwar, Gautum D
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 01-06-1999
Elsevier
Subjects:
Algorithms
Bone Marrow - radiation effects
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochronology
Humans
Isotope geochemistry. Geochronology
Least-Squares Analysis
Lens, Crystalline - radiation effects
Models, Statistical
Protons
Radiation Dosage
Radiation Protection
Radiobiology
Skin - radiation effects
Solar Activity
Time Factors
Particle
Irradiation
Solar radiation
Protection
NASA Discipline Radiation Health
NASA Center JSC
Non-NASA Center
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Calculations of total dose and equivalent dose as functions of time, as well as dose-rate and equivalent dose rate since event start are presented for fifteen of the larger solar particle events that occurred during the period between November 1987 and August 1991. The doses, dose-equivalents, and rates presented are for exposures to the skin, ocular lens, and bone marrow behind a thickness of aluminum shielding which provides protection comparable to that of a thin spacecraft. The calculated dose vs time profiles are parameterized using a Weibull cumulative distribution as the fitting function. Parameters are determined using least-squares techniques. Fitted curves are then differentiated to produce smoothed dose-rate curves for each of the events. These results provide a useful starting point for the development of methods to predict the cumulative doses and times to reach various dose limits from a limited number of dosimeter measurements early in the evolution of a solar particle event.
ISSN:1350-4487
1879-0925
DOI:10.1016/S1350-4487(99)00064-5