LARGE-ANGLE CORRELATIONS IN EVAPORATIVE PARTICLE EMISSION : SHAPE DISTORTION ? SURFACE EXPANSION ?

1986 ◽  
Vol 47 (C4) ◽  
pp. C4-289-C4-303
Author(s):  
R. LACEY ◽  
N. N. AJITANAND ◽  
J. M. ALEXANDER ◽  
D.M. DE CASTRO RIZZO ◽  
G. F. PEASLEE ◽  
...  
Keyword(s):  
Large Angle ◽  
Particle Emission ◽  
Shape Distortion ◽  
Surface Expansion

Comparison of Radiation Transport Codes for Solar Particle Events Space Environment: II

2009 ◽  
Author(s):  
Ram Tripathi ◽  
Lawrence Townsend ◽  
Tony Gabriel ◽  
Lawrence PIinsky ◽  
Tony Slaba
Keyword(s):  
Radiation Transport ◽  
Space Environment ◽  
Solar Particle Events ◽  
Solar Particle

scholarly journals Radiation Risks in Cis-Lunar Space for a Solar Particle Event Similar to the February 1956 Event

Aerospace ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 107
Author(s):  
Fahad A. Zaman ◽  
Lawrence W. Townsend
Keyword(s):  
Effective Dose ◽  
Energy Transport ◽  
Radiation Transport ◽  
Organ Doses ◽  
Solar Particle Events ◽  
Solar Particle ◽  
Transport Code ◽  
On Line ◽  
Critical Organ ◽  
In Cis

Solar particle events (SPEs) can pose serious threats for future crewed missions to the Moon. Historically, there have been several extreme SPEs that could have been dangerous for astronauts, and thus analyzing their potential risk on humans is an important step towards space exploration. In this work, we study the effects of a well-known SPE that occurred on 23 February 1956 on a mission in cis-Lunar space. Estimates of the proton fluence spectra of the February 1956 event were obtained from three different parameterized models published within the past 12 years. The studied geometry consists of a female phantom in the center of spherical spacecraft shielded by aluminum area densities ranging from 0.4 to 40 g cm−2. The effective dose, along with lens, skin, blood forming organs, heart, and central nervous system doses, were tallied using the On Line Tool for the Assessment of Radiation In Space (OLTARIS), which utilizes the High Z and Energy TRansport code (HZETRN), a deterministic radiation transport code. Based on the parameterized models, the results herein show that thicknesses comparable to a spacesuit might not protect against severe health consequences from a February 1956 category event. They also show that a minimum aluminum shielding of around 20 g cm−2 is sufficient to keep the effective dose and critical organ doses below NASA’s permissible limits for such event. In addition, except for very thin shielding, the input models produced results that were within good agreement, where the doses obtained from the three proton fluence spectra tended to converge with slight differences as the shielding thickness increases.

scholarly journals CFD Study on MR-deDuster As a Fine Particle Emission Control

2021 ◽  
Vol 1051 (1) ◽  
pp. 012069
Author(s):  
N Hasyimah ◽  
M Rashid ◽  
C M Hasrizam ◽  
H Norelyza ◽  
S Hajar
Keyword(s):  
Fine Particle ◽  
Emission Control ◽  
Particle Emission

FINE PARTICLE EMISSION DERIVED FROM ROAD TRAFFIC

2001 ◽  
Vol 32 ◽  
pp. 171-172
Author(s):  
G. MORDAS ◽  
V. ULEVICIUS
Keyword(s):  
Fine Particle ◽  
Road Traffic ◽  
Particle Emission

Alpha-Particle Emission in Deeply Inelastic Reactions of 204-MeVO16+Nb93

1980 ◽  
Vol 45 (17) ◽  
pp. 1389-1392 ◽  
Author(s):  
G. R. Young ◽  
R. L. Ferguson ◽  
A. Gavron ◽  
D. C. Hensley ◽  
Felix E. Obenshain ◽  
...  
Keyword(s):  
Alpha Particle ◽  
Particle Emission
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