... NUCLEAR SCATTERING), (*COMPTON SCATTERING, GAMMA RAYS), ABSORPTION, PHOTOELECTRIC EFFECT, SHIELDING, NUCLEAR ...
DTIC Science & Technology
It is important to minimize the background for gamma ray remote sensing experiments. It becomes more important with the advent of high-resolution gamma ray spectroscopy, as one wishes to study smaller regions and lower elemental concentrations. Here, we describe our procedure to minimize the background due to ...
NASA Astrophysics Data System (ADS)
Aug 6, 2011 ... The Mars 2001 Orbiter Gamma Ray Spectrometer (GRS) will be used to monitor the gamma rays emitted from the surface of Mars at different ...
NASA Website
The {beta} decay of the neutron-deficient isotope {sup 103}In was investigated by using total absorption {gamma}-ray spectrometry on mass-separated sources. The measurement reveals a high-lying resonance of the {beta}-decay strength in striking disagreement with high-resolution {gamma}-ray data. The result is discussed in comparison ...
Energy Citations Database
confirmed by the JPL high-resolution gamma ray spectrom- ... Figure (opposite page): Components of the high resolution gamma ray spectrometer used ...
The decay of the 25-min activity of Te/sup 131/ has been investigated with scintillation spectrometers and also with an intermediate image beta-ray spectrometer. The energies of the gamma rays which have been observed are On the basis of gamma-gamma coincidence measurements, it is proposed that the 350-, ...
... Pagination or Media Count : 1. Descriptors : DETECTION, GAMMA RAYS, NEUTRONS, PULSE DISCRIMINATORS, SUCTION SLOTS. ...
... Accession Number : ADA338744. Title : A Simulation of the Lunar Prospector's Gamma Ray Spectrometer. Descriptive Note : Master's thesis. ...
A device has been built, based on a nuclear analog to Raman spectroscopy, which monitors the gamma ray absorption cross section of nuclei in an Fe foil as a function of the frequency of an Rf magnetic field in which the foil is placed.
A total absorption NaI(Tl) gamma spectrometer has been assembled and tested over the range 0 to 10 Mev with thermal neutron capture gamma rays. It employs an 8-in. diam by 12-in. NaI(Tl) anticoincidence mantel. The measured width at 8.5 Mev is 3% (full width at half-maximum). Typical spectra are ...
The paper describes an actively shielded, multicrystal scintillation spectrometer for measurement of
NASA Technical Reports Server (NTRS)
... of the Benjamin spectrometer. These scattered gamma rays were detected by the spectrometer and although the detector ...
17 images found for "Gamma Ray Spectrometer Suite" .... This global view of Mars in intermediate-energy, or epithermal, neutrons was created ...
Observations by the Apollo 15 and 16 gamma-ray spectrometers are compared with those of a number of
A collimated high-resolution gamma ray spectrometer was flown on a balloon over Palestine, Texas, on
MESSENGER's Gamma-Ray Spectrometer Gears up for Mercury Flyby 22 Sep 2008 ( Source: Johns Hopkins University Applied Physics Laboratory) ...
Jul 31, 2011 ... The fundamental purpose of the Gamma Ray Spectrometer (GRS) ... The most important elements detectable by the GRS are uranium (U), ...
Jul 15, 2011 ... The Luna 10 32-channel scintillation gamma-ray spectrometer was designed to ... on Earth using potassium, thorium, and uranium sources. ...
Los Alamos has designed gamma ray and neutron spectrometers for Lunar Scout, two robotic missions to
Map of Martian Potassium at Mid-Latitudes ... The element potassium, shown on this NASA Mars Odyssey gamma ray spectrometer map of the mid-latitude region ...
Oct 2, 2001 ... The Gamma Ray Spectrometer (GRS) will map the abundances of ten elements on the Moon's surface: thorium, potassium, uranium, iron, oxygen, ...
[Sensor_Name: Short_Name='GAMMA RAY SPECTROMETERS'] ... Reformatted Data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream ...
A single-channel gamma -ray spectrometer is described. The number of pulses counted on each channel is automatically recorded on a paper ribbon, and the apparatus is present for measuring the next channel. (auth)
