Cosmic Radiation Effects in Meteorites

Nature ◽  
1955 ◽  
Vol 176 (4485) ◽  
pp. 733-734 ◽  
Author(s):  
P. REASBECK ◽  
K. I. MAYNE
Keyword(s):  
Cosmic Radiation ◽  
Radiation Effects

The cosmic radiation effects and activation monitor

1989 ◽  
Author(s):  
C. S. Dyer ◽  
A. J. Sims ◽  
R. J. Hutchings ◽  
D. Mapper ◽  
J. H. Stephen ◽  
...  
Keyword(s):  
Cosmic Radiation ◽  
Radiation Effects

Cosmic Radiation Effects on Avionics

1999 ◽  
Vol 86 (4) ◽  
pp. 337-342 ◽  
Author(s):  
C.S. Dyer ◽  
P.R. Truscott
Keyword(s):  
Cosmic Radiation ◽  
Radiation Effects

Laboratory simulation of cosmic radiation effects on stressed Ge:Ga detectors at L2 and curing

2006 ◽  
Author(s):  
Jutta M. Stegmaier ◽  
Stephan M. Birkmann ◽  
Ulrich Grözinger ◽  
Reinhard Katterloher ◽  
Oliver Krause ◽  
...  
Keyword(s):  
Cosmic Radiation ◽  
Radiation Effects ◽  
Laboratory Simulation

Use of Semi-Dipole Magnetic Field for Spacecraft Radiation Protection

2012 ◽  
Vol 190 ◽  
pp. 713-716
Author(s):  
Tara Ahmadi
Keyword(s):  
Magnetic Field ◽  
Radiation Protection ◽  
Human Body ◽  
High Intensity ◽  
Cosmic Radiation ◽  
Radiation Effects ◽  
Permanent Magnets ◽  
Low Intensity ◽  
Dipole Magnetic Field ◽  
Intensity Magnetic Field

There are various methods to shield spacecraft from energetic particles, like one based on the usage of the permanent magnets. At the same time this method is not perfect; it only suggests low intensity magnetic field because of neglecting galactic cosmic radiation effects on human body. In this paper, hyper thin rings as a shield for spacecraft are suggested. Although these rings are lighter than permanent magnets, their ability to protect spaceship with a safe and high intensity magnetic field is higher than the magnets.

scholarly journals Approaches for Surveying Cosmic Radiation Damage in Large Populations of Arabidopsis thaliana Seeds – Antarctic Balloons and Particle Beams

2020 ◽  
Vol 6 (2) ◽  
pp. 54-73
Author(s):  
Brandon Califar ◽  
Rachel Tucker ◽  
Juliana Cromie ◽  
Natasha Sng ◽  
R. Austin Schmitz ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Cosmic Radiation ◽  
Radiation Effects ◽  
Biological Effects ◽  
National Laboratory ◽  
Cosmic Ray ◽  
Space Radiation ◽  
Brookhaven National Laboratory ◽  
Whole Genome ◽  
Long Duration

AbstractThe Cosmic Ray Exposure Sequencing Science (CRESS) payload system was a proof of concept experiment to assess the genomic impact of space radiation on seeds. CRESS was designed as a secondary payload for the December 2016 high-altitude, long-duration south polar balloon flight carrying the Boron and Carbon Cosmic Rays in the Upper Stratosphere (BACCUS) experiment. Investigation of the biological effects of Galactic Cosmic Radiation (GCR), particularly those of ions with High-Z and Energy (HZE), was of interest due to the genomic damage this type of radiation inflicts. The biological effects of radiation above Antarctica (ANT) were studied using Arabidopsis thaliana seeds and compared to a simulation of GCR at Brookhaven National Laboratory (BNL) and to laboratory control seeds. The CRESS payload was broadly designed to 1U CubeSat specifications (10 cm × 10 cm × 10 cm, ≤1.33 kg), maintained 1 atm internal pressure, and carried an internal cargo of 580,000 seeds and twelve CR-39 Solid-State Nuclear Track Detectors (SSNTDs). Exposed BNL and ANT M0 seeds showed significantly reduced germination rates and elevated somatic mutation rates when compared to non-irradiated controls, with the BNL mutation rate also being higher than that of ANT. Genomic DNA from plants presenting distinct aberrant phenotypes was evaluated with whole-genome sequencing using PacBio SMRT technology, which revealed an array of structural genome variants in the M0 and M1 plants. This study was the first whole-genome characterization of space-irradiated seeds and demonstrated both the efficiency and efficacy of Antarctic long-duration balloons for the study of space radiation effects on eukaryote genomes.

Cosmic radiation effects on avionics

1999 ◽  
Vol 22 (8) ◽  
pp. 477-483 ◽  
Author(s):  
C.S. Dyer ◽  
P.R. Truscott
Keyword(s):  
Cosmic Radiation ◽  
Radiation Effects

scholarly journals Radiation in the Atmosphere—A Hazard to Aviation Safety?

Atmosphere ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1358
Author(s):  
Matthias M. Meier ◽  
Kyle Copeland ◽  
Klara E. J. Klöble ◽  
Daniel Matthiä ◽  
Mona C. Plettenberg ◽  
...  
Keyword(s):  
United States Of America ◽  
Cosmic Radiation ◽  
Radiation Effects ◽  
Scientific Literature ◽  
The United States ◽  
Aviation Safety ◽  
Mitigation Measures ◽  
Radiological Protection ◽  
The European Union ◽  
Radiation Sources

Exposure of aircrew to cosmic radiation has been recognized as an occupational health risk for several decades. Based on the recommendations by the International Commission on Radiological Protection (ICRP), many countries and their aviation authorities, respectively have either stipulated legal radiation protection regulations, e.g., in the European Union or issued corresponding advisory circulars, e.g., in the United States of America. Additional sources of ionizing and non-ionizing radiation, e.g., due to weather phenomena have been identified and discussed in the scientific literature in recent years. This article gives an overview of the different generally recognized sources due to weather as well as space weather phenomena that contribute to radiation exposure in the atmosphere and the associated radiation effects that might pose a risk to aviation safety at large, including effects on human health and avionics. Furthermore, potential mitigation measures for several radiation sources and the prerequisites for their use are discussed.

Quantitative analysis of in situ straining experiments in the case of strong frictional forces

1978 ◽  
Vol 36 (1) ◽  
pp. 570-571
Author(s):  
F. Louchet ◽  
L.P. Kubin
Keyword(s):  
Strain Rate ◽  
Radiation Effects ◽  
Dislocation Line ◽  
Critical Length ◽  
Local Strain ◽  
Local Flow ◽  
Double Kink ◽  
Dislocation Densities ◽  
Frictional Forces ◽  
Local Strain Rate

Investigation of frictional forces -Experimental techniques and working conditions in the high voltage electron microscope have already been described (1). Care has been taken in order to minimize both surface and radiation effects under deformation conditions.Dislocation densities and velocities are measured on the records of the deformation. It can be noticed that mobile dislocation densities can be far below the total dislocation density in the operative system. The local strain-rate can be deduced from these measurements. The local flow stresses are deduced from the curvature radii of the dislocations when the local strain-rate reaches the values of ∿ 10-4 s-1.For a straight screw segment of length L moving by double-kink nucleation between two pinning points, the velocity is :where ΔG(τ) is the activation energy and lc the critical length for double-kink nucleation. The term L/lc takes into account the number of simultaneous attempts for double-kink nucleation on the dislocation line.

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