Bulletin of the American Physical Society
85th Annual Meeting of the APS Southeastern Section
Volume 63, Number 19
Thursday–Saturday, November 8–10, 2018; Holiday Inn at World’s Fair Park, Knoxville, Tennessee
Session D05: Poster Session (6:00pm-7:30pm)
6:00 PM,
Thursday, November 8, 2018
Holiday Inn Knoxville Downtown
Room: Atrium
Abstract ID: BAPS.2018.SES.D05.88
Abstract: D05.00088 : Albedo Protons and Neutrons Emitted from Hydrated Layers of Lunar Regolith*
Presenter:
Fahad Zaman
(University of Tennessee)
Authors:
Fahad Zaman
(University of Tennessee)
Wouter deWet
(University of New Hampshire)
Lawrence Townsend
(University of Tennessee)
In 2009, NASA launched the Lunar Reconnaissance Orbiter mission to Earth's moon carrying several instruments including the Cosmic Ray Telescope for the Effects of Radiation (CRaTER). CRaTER measures Linear Energy Transfer spectra of charged particles in the lunar radiation environment, which consists of incident galactic cosmic rays, incident solar energetic particles, and albedo particles from the lunar surface. Measurements of albedo protons show an increase in proton fluxes when observing the lunar limb rather than the nadir direction. The albedo proton flux also exhibits diurnal variations, and several other anomalies in proton yields. To better understand these unexpected phenomena, the angular yields of the albedo neutrons and protons emitted from different hydrogenated layer thicknesses, due to incident galactic cosmic rays, are modeled using the MCNP Monte Carlo transport code. Establishing the presence of a hydrogen layer might also aid in developing maps of the lunar surface regions with increased water content.
*Research Support from a University of New Hampshire subcontract, funded under NASA Contract No. NNG11PA03C, is acknowledged.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.SES.D05.88
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