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Cosmic Radiation Dose Measurements from the RaD-X Flight CampaignThe NASA Radiation Dosimetry Experiment (RaD-X) stratospheric balloon flight mission obtained measurements for improving the understanding of cosmic radiation transport in the atmosphere and human exposure to this ionizing radiation field in the aircraft environment. The value of dosimetric measurements from the balloon platform is that they can be used to characterize cosmic ray primaries, the ultimate source of aviation radiation exposure. In addition, radiation detectors were flown to assess their potential application to long-term, continuous monitoring of the aircraft radiation environment. The RaD-X balloon was successfully launched from Fort Sumner, New Mexico (34.5 degrees North, 104.2 degrees West) on 25 September 2015. Over 18 hours of flight data were obtained from each of the four different science instruments at altitudes above 20 kilometers. The RaD-X balloon flight was supplemented by contemporaneous aircraft measurements. Flight-averaged dosimetric quantities are reported at seven altitudes to provide benchmark measurements for improving aviation radiation models. The altitude range of the flight data extends from commercial aircraft altitudes to above the Pfotzer maximum where the dosimetric quantities are influenced by cosmic ray primaries. The RaD-X balloon flight observed an absence of the Pfotzer maximum in the measurements of dose equivalent rate.
Document ID
20170000820
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mertens, Christopher J. ORCID(NASA Langley Research Center Hampton, VA, United States)
Gronoff, Guillaume P. ORCID(Science Systems and Applications, Inc. Hampton, VA, United States)
Norman, Ryan B. ORCID(NASA Langley Research Center Hampton, VA, United States)
Hayes, Bryan M. ORCID(NASA Langley Research Center Hampton, VA, United States)
Lusby, Terry C. (NASA Ames Research Center Moffett Field, CA, United States)
Straume, Tore (NASA Ames Research Center Moffett Field, CA, United States)
Tobiska, W. Kent ORCID(Space Environment Technologies Pacific Palisades, CA, United States)
Hands, Alex (Surrey Univ. Guildford, United Kingdom)
Ryden, Keith ORCID(Surrey Univ. Guildford, United Kingdom)
Benton, Eric (Oklahoma State Univ. Stillwater, OK, United States)
Wiley, Scott (Jacobs Technology, Inc. Edwards AFB, CA, United States)
Gersey, Brad (Prairie View Agricultural and Mechanical Coll. TX, United States)
Wilkins, Richard (Prairie View Agricultural and Mechanical Coll. TX, United States)
Xu, Xiaojing (National Inst. of Aerospace Hampton, VA, United States)
Date Acquired
January 26, 2017
Publication Date
October 6, 2016
Publication Information
Publication: Space Weather
Volume: 14
Issue: 10
ISSN: 1539-4956
Subject Category
Space Radiation
Report/Patent Number
NF1676L-24266
Funding Number(s)
PROJECT: SCMD-EarthScienceSystem_383807
WBS: 383807.02.10.05.01.01
Distribution Limits
Public
Copyright
Other