Orbital chemistry—Lunar surface analysis from the X-ray and gamma ray remote sensing experiments

1977 ◽  
Vol 10 ◽  
pp. 17-43 ◽  
Author(s):  
Isidore Adler ◽  
Jacob I. Trombka
Keyword(s):  
Remote Sensing ◽  
Surface Analysis ◽  
Lunar Surface ◽  
Gamma Ray ◽  
X Ray

Elemental composition of the lunar surface: Analysis of gamma ray spectroscopy data from Lunar Prospector

2006 ◽  
Vol 111 (E12) ◽  
pp. n/a-n/a ◽  
Author(s):  
T. H. Prettyman ◽  
J. J. Hagerty ◽  
R. C. Elphic ◽  
W. C. Feldman ◽  
D. J. Lawrence ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Surface Analysis ◽  
Lunar Surface ◽  
Gamma Ray ◽  
Spectroscopy Data ◽  
Lunar Prospector ◽  
Gamma Ray Spectroscopy

scholarly journals Re-evaluation of Lunar X-ray observations by Apollo 15 & 16

2020 ◽  
Author(s):  
Erik Kuulkers ◽  
Anniek Gloudemans
Keyword(s):  
Remote Sensing ◽  
Surface Chemistry ◽  
Lunar Surface ◽  
Intensity Ratio ◽  
X Ray ◽  
Formation History ◽  
Instrument Response ◽  
Geological Evolution ◽  
Fluorescence Spectrometer

<p>The Apollo 15 & 16 missions were the first to explore the Lunar surface chemistry by investigating about 10 percent of the Lunar surface using a remote sensing X-ray fluorescence spectrometer experiment. The data obtained has been extensively used to study Lunar formation history and geological evolution. In this work a re-evaluation of the Apollo 15 & 16 X-ray fluorescence experiment is conducted with the aim to obtain up-to-date empirical values for aluminum (Al) and magnesium (Mg) concentrations relative to silicon (Si) of the upper Lunar surface. An up-to-date orbit reconstruction, updated instrument response, and improved intensity ratio calculations are used to obtain new intensity ratio maps.</p>

FLASH X-RAY DEVICES FOR PUMPING NUCLEAR MATERIALS DEVELOPED IN THE GAMMA-RAY LASER PROGRAM AT TEXAS

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-367-C9-370
Author(s):  
C. B. COLLINS ◽  
F. DAVANLOO ◽  
T. S. BOWEN ◽  
J. J. COOGAN
Keyword(s):  
Gamma Ray ◽  
Nuclear Materials ◽  
X Ray

Digital pulse processor for spectrometry of charged particles, neutrons, x-ray, and gamma-ray

2003 ◽  
Vol 8 (5-6) ◽  
pp. 60-64
Author(s):  
A.I. Arkhangelsky ◽  
◽  
Yu.D. Kotov ◽  
P.Yu. Chistiakov ◽  
◽  
...  
Keyword(s):  
Gamma Ray ◽  
Charged Particles ◽  
X Ray ◽  
Digital Pulse

A Combined Model for the X‐Ray to Gamma‐Ray Emission of Cygnus X‐1

1998 ◽  
Vol 502 (1) ◽  
pp. 428-436 ◽  
Author(s):  
Igor V. Moskalenko ◽  
Werner Collmar ◽  
Volker Schonfelder
Keyword(s):  
Gamma Ray ◽  
Combined Model ◽  
X Ray ◽  
Gamma Ray Emission

scholarly journals Aperiodic Flux Variability in A 0535+262

1996 ◽  
Vol 165 ◽  
pp. 313-319
Author(s):  
Mark H. Finger ◽  
Robert B. Wilson ◽  
B. Alan Harmon ◽  
William S. Paciesas
Keyword(s):  
Neutron Star ◽  
Gamma Ray ◽  
Beat Frequency ◽  
Power Spectra ◽  
Center Frequency ◽  
X Ray ◽  
Binary Pulsar ◽  
Transient Source ◽  
Flux Variability ◽  
Burst And Transient Source

A “giant” outburst of A 0535+262, a transient X-ray binary pulsar, was observed in 1994 February and March with the Burst and Transient Source Experiment (BATSE) onboard the Compton Gamma-Ray Observatory. During the outburst power spectra of the hard X-ray flux contained a QPO-like component with a FWHM of approximately 50% of its center frequency. Over the course of the outburst the center frequency rose smoothly from 35 mHz to 70 mHz and then fell to below 40 mHz. We compare this QPO frequency with the neutron star spin-up rate, and discuss the observed correlation in terms of the beat frequency and Keplerian frequency QPO models in conjunction with the Ghosh-Lamb accretion torque model.

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