| Autor: |
Parsons Ann, L. G. Evans, Dan Burger, Jeffrey Schweitzer, S. R. Floyd, R. Starr, J. Bodnarik, Jacob I. Trombka, T. McClanahan, Suzanne F. Nowicki, Lucy F. Lim, M. Namkung |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
2011 IEEE Nuclear Science Symposium Conference Record. |
| DOI: |
10.1109/nssmic.2011.6154608 |
| Popis: |
This paper describes the testing of a prototype active neutron/ gamma ray instrument for use in planetary science space applications. The Probing In situ with Neutrons and Gamma rays (PING) instrument can measure the full bulk elemental composition of a planet's surface over a 1 m2 area and down to 30 – 50 cm depth without the need to drill into the surface material. PING consists of three components: a pulsed neutron generator that emits 14 MeV neutrons that penetrate the surface and excite the nuclei of the planetary material; a gamma ray spectrometer that measures the energy and intensity of the gamma rays emitted by these nuclear reactions; and neutron detectors to measure the neutron moderation properties of the material. PING is tested on Earth at a unique facility near NASA/Goddard Space Flight Center where PING can be safely operated outdoors and unshielded sitting atop large (1.8m × 1.8m × .9m), well-characterized granite and basalt monuments. We will describe both this test facility and our experiments, and present gamma ray spectroscopy results that demonstrate PING's capabilities. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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