Zobrazeno 1 - 10
of 18
pro vyhledávání: '"E. L. Haines"'
Autor:
Jacob I. Trombka, F. C. McCloskey, J. L. Callas, C. Shinohara, D. M. Drake, William V. Boynton, P. Duke, W. C. Feldman, Samuel Bailey, Heinrich Wänke, L. G. Evans, Albert E. Metzger, H. Mills, E. L. Haines, J. R. Arnold, P. A. J. Englert, R. D. Starr, J. Brückner, Robert C. Reedy, S. W. Squyres
Publikováno v:
Journal of Geophysical Research. 97:7681
The Mars Observer gamma ray spectrometer will return data related to the elemental composition of Mars. The instrument has both a gamma ray spectrometer and several neutron detectors. The gamma ray spectrometer will return a spectrum nominally every
Autor:
Albert E. Metzger, E. L. Haines
Publikováno v:
Journal of Geophysical Research. 95:14695
This paper describes three methods for measuring the Martian atmosphere using gamma ray spectroscopy. One method determines atmospheric thickness based on the energy-dependent differential attenuation of gamma-ray line pairs from a common element. An
Publikováno v:
IEEE Transactions on Geoscience Electronics. 14:141-153
Two instruments, the gamma-ray spectrometer and the X-ray fluorescence spectrometer, are uniquely suited to the chemical mapping of planetary surfaces from orbit. Through their detection of characteristic line spectra they measure the concentrations
Autor:
E. L. Haines, Albert E. Metzger
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 226:517-523
A remote-sensing γ-ray spectrometer (GRS) is capable of measuring planetary surface composition through the detection of characteristic gamma rays. In addition, the planetary neutron leakage flux may be detected by means of a thin neutron absorber s
Autor:
E. L. Haines, Albert E. Metzger
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 226:509-516
A γ-ray spectrometer (GRS) orbiting about an airless or nearly airless planetary body may be used to detect and measure hydrogen concentration and the neutron leakage flux. The H concentration affects both the magnitude and energy spectrum of the ne
Publikováno v:
IEEE Transactions on Nuclear Science. 14:599-603
A major problem in multiparameter data sorting is the excessive computer memory space required for all of the available information. This paper describes a sorting technique which is useful if the information in one parameter can be represented by a
Autor:
E. L. Haines, Robert E. Zartman
Publikováno v:
Earth and Planetary Science Letters. 20:45-53
Fission-track activation was used to investigate uranium concentration and distribution in peridotite inclusions in alkali basalt from six localities. Whole-rock uranium concentrations range from 24 to 82 ng/g. Most of the uranium is uniformly distri
Autor:
Robert L. Fleischer, P. B. Price, H. R. Hart, R. E. Hanneman, E. Lifshin, J.S. Kasper, R. T. Woods, E. L. Haines
Publikováno v:
Science. 167:568-571
Particle tracks in Apollo 11 samples are dominantly of cosmic ray and solar origin: primary galactic and solar flare particles, likely spallation recoil tracks, and possible solar-wind heavy particles. The energy spectrum of irongroup nuclei is infer
Autor:
A. Bruce Whitehead, E. L. Haines
Publikováno v:
Review of Scientific Instruments. 37:190-194
Atomic scattering contribution to pulse height defect and energy dispersion of heavy ions in semiconductor detectors
Autor:
E. L. Haines
Publikováno v:
IEEE Transactions on Nuclear Science. 15:170-174
We discuss associative memory in the analysis of two-dimensional data where the variables are transformed before data accumulation. Local linear transforms reduce the number of associative locations required, while a two-dimensional search scheme sho