Results 91 to 100 of about 8,063 (207)

Experimental study of the influence of borehole parameters on prompt fission neutron uranium logging and its corrections

Nuclear Engineering and Technology
In prompt fission neutron uranium logging, borehole environmental parameters affect the measured results and must be corrected. In order to explore the influence of borehole parameters on the interpretation of logging results, this paper builds a ...
Pengfei Zhou, Bin Tang
doaj   +1 more source

Lunar Surface Rovers [PDF]

Many questions of lunar science remain unanswered because of a lack of specific data. With the potential for returning humans to the Moon and establishing a long-term presence there, a new realm of exploration is possible.
Lane, A. L., Miller, D., Plescia, J. B.
core   +1 more source

Drill/borescope System for the Mars Polar Pathfinder [PDF]

The primary goals of the Mars Polar Pathfinder (MPP) Discovery Mission are to characterize the composition and structure of Mars' north polar ice cap, and to determine whether a climate record may be preserved in layers of ice and dust.
Paige, D. A., Vasavada, A. R., Wood, S. E.   +2 more
core   +1 more source

Evidence for Widespread Hydrogen Sequestration within the Moon’s South Pole Cold Traps

The Planetary Science Journal
Hydrogen-bearing volatiles are observed to be concentrated, likely in the form of water ice, within most of the Moon's permanently shadowed regions (PSRs), poleward of 77° S.
T. P. McClanahan, A. M. Parsons, T. A. Livengood, J. J. Su, G. Chin, D. Hamara, K. Harshman, R. D. Starr   +7 more
doaj   +1 more source

Water detection at the moon, Mars and comets with a combined neutron gamma ray instrument [PDF]

Measuring the fluxes of thermal and epithermal neutrons at a planetary object in conjunction with gamma-ray spectroscopic observations will provide information about the chemical composition of the surface which is less model dependent than the gamma ray
Haines, Eldon L., Metzger, Albert E.
core   +1 more source

Maxwell Spectrum as a Parameter to Verify the Dose in Brain Cancer (Glioblastoma) by Boron Neutron Capture Therapy (BNCT) using Monte Carlo Method

Brazilian Journal of Radiation Sciences
To evaluate the efficiency of neutron capture therapy (BNCT) treatment in glioblastoma multiforme, it is necessary to evaluate the impact of the neutron beam on the tumor cell and find better results so that BNCT treatment is viable.
Otto Haubrich, Domingos D'Oliveira Cardoso, Marcos Paulo Cavaliere de Medeiros   +2 more
doaj   +1 more source

High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility [version 1; peer review: 2 approved]

Nuclear Science and Technology Open Research
Background Research with neutrons is usually related to the use of fission-based research reactors or neutron spallation sources to offer neutron beams for science and industry.
Ralf Gebel, Olaf Felden, Romuald Hanslik, Andreas Lehrach, Oliver Meusel, Yannick Beßler, Holger Podlech, Thomas Gutberlet, Thomas Brückel, Johannes Baggemann, Klaus Lieutenant, Jingjing Li, Ulrich Rücker, Eric Mauerhofer, Paul Zakalek, Jörg Voigt   +15 more
doaj   +1 more source

High Current Accelerator-driven Neutron Sources - The HBS project for a next generation neutron facility [version 2; peer review: 3 approved, 1 approved with reservations]

Nuclear Science and Technology Open Research
Background Research with neutrons is usually related to the use of fission-based research reactors or neutron spallation sources to offer neutron beams for science and industry.
Ralf Gebel, Olaf Felden, Romuald Hanslik, Andreas Lehrach, Oliver Meusel, Yannick Beßler, Holger Podlech, Thomas Gutberlet, Thomas Brückel, Johannes Baggemann, Klaus Lieutenant, Jingjing Li, Ulrich Rücker, Eric Mauerhofer, Paul Zakalek, Jörg Voigt   +15 more
doaj   +1 more source

Estimating Lunar Pyroclastic Deposit Depth from Imaging Radar Data: Applications to Lunar Resource Assessment [PDF]

Lunar pyroclastic deposits represent one of the primary anticipated sources of raw materials for future human settlements. These deposits are fine-grained volcanic debris layers produced by explosive volcanism contemporaneous with the early stage of mare
Campbell, B. A., Campbell, D. B., Hawke, B. R., Stacy, N. J., Thompson, T. W., Zisk, S. H.   +5 more
core   +1 more source

Isotopic variations of Sm, Gd, Er and Yb found in planetary materials caused by neutron-capture reactions in nature

Journal of Analytical Science and Technology
The isotopic shifts of 149Sm–150Sm and 157Gd–158Gd have often been observed in meteorites and lunar surface materials, because they result from the neutron-capture reactions associated with secondary neutrons produced by cosmic-ray irradiation. While the
Hiroshi Hidaka
doaj   +1 more source