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PROGRESS TOWARDS AVIATION RADIATION MONITORING

Tobiska, W. Kent and Meier, Matthias M. and Didkovsky, Leonid and Wieman, Seth and Judge, Kevin and Gersey, Brad and Bouwer, Dave and Benton, Eric and Mertens, Chris and Wilkins, Rick and Adams, Jim (2021) PROGRESS TOWARDS AVIATION RADIATION MONITORING. COSPAR 2021, 28. Januar - 4. Februar 2021, Sydney, Australia and Virtual Event (Hybrid).

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Abstract

The aerospace environment has several sources of ionizing radiation. Exposure to this radiation is one of the natural hazards faced by aircrew, high-altitude pilots, frequent flyers, and commercial space travelers. Galactic cosmic rays (GCRs) and solar energetic particles (SEPs) almost always are the most important sources of ionizing radiation, particularly when traveling at or above commercial aviation altitudes (8 km or 26,000 ft). GCRs originate from outside the solar system and consist mostly of energetic protons with some alpha particles and a few heavier ions such as iron. SEPs originate on the Sun and are similar in composition to GCRs, being predominantly protons but with relatively fewer heavier ions. Recent measurements also suggest that secondary bremsstrahlung gamma-rays from precipitating Van Allen Belt relativistic electrons may also contribute dose at aviation altitudes. Regardless of their sources, charged particles transit Earth’s magnetosphere and interact with its atmosphere depending upon cutoff rigidity where the Earth’s magnetic field acts like a high-pass filter. During normal geomagnetic conditions, cutoff rigidity varies approximately inversely with geographic latitude; only particles with relatively high rigidity can make it to the atmosphere at latitudes near the equator, while even the lowest rigidity particles can enter the atmosphere at the geomagnetic poles. As a result, the largest primary radiation fluxes enter at high latitudes, with maxima surrounding the geomagnetic poles. We describe the ISWAT workshop results reviewing the state-of-art for aviation radiation monitoring and report the first results of the ARMAS Dual Monitor project demonstrating 24/7 monitoring as well as improved understanding of the particles and processes that create the aviation radiation environment.

Item URL in elib:https://elib.dlr.de/141304/
Document Type:Conference or Workshop Item (Speech)
Title:PROGRESS TOWARDS AVIATION RADIATION MONITORING
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Tobiska, W. KentSpace Environment Technologies, Pacific Palisades, California, United StatesUNSPECIFIED
Meier, Matthias M.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; Matthias.Meier (at) dlr.dehttps://orcid.org/0000-0003-0918-6473
Didkovsky, LeonidUNSPECIFIEDUNSPECIFIED
Wieman, SethUNSPECIFIEDUNSPECIFIED
Judge, KevinUNSPECIFIEDUNSPECIFIED
Gersey, BradUNSPECIFIEDUNSPECIFIED
Bouwer, DaveUNSPECIFIEDUNSPECIFIED
Benton, EricUNSPECIFIEDUNSPECIFIED
Mertens, ChrisUNSPECIFIEDUNSPECIFIED
Wilkins, RickUNSPECIFIEDUNSPECIFIED
Adams, JimUNSPECIFIEDUNSPECIFIED
Date:1 February 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:aerospace environment, ionizing radiation, ARMAS Dual Monitor
Event Title:COSPAR 2021
Event Location:Sydney, Australia and Virtual Event (Hybrid)
Event Type:international Conference
Event Dates:28. Januar - 4. Februar 2021
Organizer:COSPAR - COMMITTEE ON SPACE RESEARCH
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Human Factors
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:12 Mar 2021 10:43
Last Modified:15 Apr 2021 13:33

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