Zobrazeno 1 - 10
of 1 090
pro vyhledávání: '"Feldman W"'
The Los Alamos National Laboratory designed and built Mars Odyssey Neutron Spectrometer (MONS) has been in excellent health operating from February 2002 to the present. MONS measures the neutron leakage albedo from galactic cosmic ray bombardment of
Externí odkaz:
http://arxiv.org/abs/1904.09036
Autor:
Mesick, K. E., Stonehill, L. C., Coupland, D. D. S, Beckman, D. T., West, S. T., Nowicki, S. F., Dallmann, N. A., Storms, S. A., Feldman, W. C.
Neutron and gamma-ray spectroscopy (NGRS) is a well established technique for studying the geochemical composition and volatile abundance relevant to planetary structure and evolution of planetary bodies. Previous NGRS instruments have used separate
Externí odkaz:
http://arxiv.org/abs/1901.02967
Publikováno v:
Earth and Space Science, 5, 324-338. (2018)
Galactic cosmic rays undergo complex nuclear interactions with nuclei within planetary bodies that have little to no atmosphere. Radiation transport simulations are a key tool used in understanding the neutron and gamma-ray albedo coming from these i
Externí odkaz:
http://arxiv.org/abs/1810.06483
Autor:
Eke, V. R., Bower, K. E., Diserens, S., Ryder, M., Yeomans, P. E. L., Teodoro, L. F. A., Elphic, R. C., Feldman, W. C., Hermalyn, B., Lavelle, C. M., Lawrence, D. J.
Publikováno v:
2015, J. Geophys. Res. Planets, 120
The variation of remotely sensed neutron count rates is measured as a function of cratercentric distance using data from the Lunar Prospector Neutron Spectrometer. The count rate, stacked over many craters, peaks over the crater centre, has a minimum
Externí odkaz:
http://arxiv.org/abs/1505.05403
Autor:
Teodoro, L. F. A., Lawrence, D. J., Eke, V. R., Elphic, R. E., Feldman, W. C., Maurice, S., Siegler, M. A., Paige, D. A.
We assess local-time variations of epithermal-neutron count rates measured by the Lunar Prospector Neutron Spectrometer. We investigate the nature of these variations and find no evidence to support the idea that such variations are caused by diurnal
Externí odkaz:
http://arxiv.org/abs/1501.05712
A detailed comparison is made of results from the Lunar Prospector Neutron Spectrometer (LPNS) and the Lunar Exploration Neutron Detector Collimated Sensors for EpiThermal Neutrons (LEND CSETN). Using the autocorrelation function and power spectrum o
Externí odkaz:
http://arxiv.org/abs/1304.8123
Publikováno v:
Eke et al, 2012, ApJ, 747, 6
Data from the Lunar Exploration Neutron Detector (LEND) Collimated Sensors for Epithermal Neutrons (CSETN) are used in conjunction with a model based on results from the Lunar Prospector mission to quantify the extent of the background in the LEND CS
Externí odkaz:
http://arxiv.org/abs/1108.2048
Autor:
Prettyman, T. H., Yamashita, N., Toplis, M. J., McSween, H. Y., Schörghofer, N., Marchi, S., Feldman, W. C., Castillo-Rogez, J., Forni, O., Lawrence, D. J., Ammannito, E., Ehlmann, B. L., Sizemore, H. G., Joy, S. P., Polanskey, C. A., Rayman, M. D., Raymond, C. A., Russell, C. T.
Publikováno v:
Science, 2017 Jan 01. 355(6320), 55-59.
Externí odkaz:
https://www.jstor.org/stable/24917832
Autor:
Feldman, W. C., Boynton, W. V., Tokar, R. L., Prettyman, T. H., Gasnault, O., Squyres, S. W., Elphic, R. C., Lawrence, D. J., Lawson, S. L., Maurice, S., McKinney, G. W., Moore, K. R., Reedy, R. C.
Publikováno v:
Science, 2002 Jul 01. 297(5578), 75-78.
Externí odkaz:
https://www.jstor.org/stable/3077220
Autor:
Boynton, W. V., Feldman, W. C., Squyres, S. W., Prettyman, T. H., Brückner, J., Evans, L. G., Reedy, R. C., Starr, R., Arnold, J. R., Drake, D. M., Englert, P. A. J., Metzger, A. E., Mitrofanov, Igor, Trombka, J. I., d'Uston, C., Wänke, H., Gasnault, O., Hamara, D. K., Janes, D. M., Marcialis, R. L., Maurice, S., Mikheeva, I., Taylor, G. J., Tokar, R., Shinohara, C.
Publikováno v:
Science, 2002 Jul 01. 297(5578), 81-85.
Externí odkaz:
https://www.jstor.org/stable/3077222