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Author : T. L. Cline
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (31 download)
Download or read book A Double Gamma-ray Spectrometer to Search for Positions in Space written by T. L. Cline and published by . This book was released on 1962 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. L. Cline
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (623 download)
Download or read book A Double Gamma-ray Spectrometer to Search for Positions in Space written by T. L. Cline and published by . This book was released on 1962 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. L. Cline
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (761 download)
Download or read book A Double Gamma-ray Spectrometer to Search for Positrons in Space written by T. L. Cline and published by . This book was released on 1962 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (3 download)
Download or read book NASA Activities written by and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1990 pages
Book Rating : 4.3/5 (121 download)
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1962 with total page 1990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. National Aeronautics and Space Administration
Publisher :
ISBN 13 :
Total Pages : 648 pages
Book Rating : 4.:/5 (312 download)
Download or read book N A S A Activities written by U.S. National Aeronautics and Space Administration and published by . This book was released on 1977 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. Matteucci
Publisher : Springer Science & Business Media
ISBN 13 : 9780792366799
Total Pages : 644 pages
Book Rating : 4.3/5 (667 download)
Download or read book The Evolution of The Milky Way written by F. Matteucci and published by Springer Science & Business Media. This book was released on 2000 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review of the most up-to-date observational and theoretical information concerning the chemical evolution of the Milky Way compares the abundances derived from field stars and clusters, giving information on the abundances and dynamics of gas.
Author : United States. Superintendent of Documents
Publisher :
ISBN 13 :
Total Pages : 1284 pages
Book Rating : 4.:/5 (89 download)
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1961 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Superintendent of Documents
Publisher :
ISBN 13 :
Total Pages : 1284 pages
Book Rating : 4.F/5 ( download)
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1980 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. A. Ross
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.3/5 (91 download)
Download or read book Medical Gamma-ray Spectrometry written by D. A. Ross and published by . This book was released on 1959 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D.L. Domingue
Publisher : Springer Science & Business Media
ISBN 13 : 0387772146
Total Pages : 621 pages
Book Rating : 4.3/5 (877 download)
Download or read book The MESSENGER Mission to Mercury written by D.L. Domingue and published by Springer Science & Business Media. This book was released on 2007-12-19 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to present the science and instruments of NASA’S MESSENGER space mission. The articles, written by the experts in each area of the MESSENGER mission, describe the mission, spacecraft, scientific objectives, and payload. The book is of interest to all potential users of the data returned by the mission, to those studying the nature of Mercury, and by all those interested in the design and implementation of planetary exploration missions.
Author : Willem Wamsteker
Publisher : Springer Science & Business Media
ISBN 13 : 9780792325277
Total Pages : 794 pages
Book Rating : 4.3/5 (252 download)
Download or read book Frontiers Of Space And Ground-Based Astronomy written by Willem Wamsteker and published by Springer Science & Business Media. This book was released on 1994-08-31 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: ROSAT Observations G. HASINGER Max-Planck-Institut flir extraterrestrische Physik, D-85740 Garching, Germany Abstract. This review describes the most recent advances in the study of the extragalactic soft X-ray background and what we can learn about its constituents. The deepest pointed observations with the ROSAT PSPC are discussed. The logN-logS relation is presented, which reaches to the faintest X-ray fluxes and to the highest AGN surface densities ever achieved. The N(>S) relation shows a 2 density in excess of 400 deg- at the faintest fluxes and a flattening below the Einstein Deep Survey limit. About 60% of the extragalactic background has been resolved in the deepest field. Detailed source spectra and first optical and radio identifications will be discussed. The results are put into perspective of the higher energy X -ray background. Key words: X-rays, background radiations, active galactic nuclei. 1. Introduction The extragalactic X-ray background (XRB), discovered about 30 years ago, has been studied extensively with many X-ray experiments, in particular with the satel lites HEAO I and II (see ego Boldt 1987) and with ROSAT (e. g. Hasinger et aI. , 1993). Figure 1 shows a compilation of some of the most recent spectral measure ments for the X-ray background. Over the energy range from 3 to about 100 keY its spectrum can be well approximated by an optically thin thermal bremsstrahlung model with kT ~ 40 keY, while at lower X-ray energies a steepening into a new component has been observed observed (e. g.
Author : James Duncan Hall
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.0/5 ( download)
Download or read book Neutron-gamma Ray Spectrometer written by James Duncan Hall and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A neutron-gamma ray spectrometer developed at Texas Nuclear Corporation is described. The spectrometer employs pulse shape discrimination in an organic scintillator detector to selectively detect neutrons or gamma rays in a mixed field by a method not utilizing space charge limiting. Selective detection may be obtained for neutrons of energy higher than 0.7 MeV and for gamma rays above 0.25 MeV. Spectral information is usable to 15 MeV for neutrons and to 4 MeV for gamma rays. Detection efficiencies range from about 6% to 30%. Typical spectra, data analysis procedure, and operating characteristics of the spectrometer are presented.
Author : Roland Diehl
Publisher : Springer Science & Business Media
ISBN 13 : 3642126979
Total Pages : 577 pages
Book Rating : 4.6/5 (421 download)
Download or read book Astronomy with Radioactivities written by Roland Diehl and published by Springer Science & Business Media. This book was released on 2010-10-02 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the reader to the field of nuclear astrophysics, i.e. the acquisition and reading of measurements on unstable isotopes in different parts of the universe. The authors explain the role of radioactivities in astrophysics, discuss specific sources of cosmic isotopes and in which special regions they can be observed. More specifically, the authors address stars of different types, stellar explosions which terminate stellar evolutions, and other explosions triggered by mass transfers and instabilities in binary stars. They also address nuclear reactions and transport processes in interstellar space, in the contexts of cosmic rays and of chemical evolution. A special chapter is dedicated to the solar system which even provides material samples. The book also contains a description of key tools which astrophysicists employ in those particular studies and a glossary of key terms in astronomy with radioactivities.
Author :
Publisher :
ISBN 13 :
Total Pages : 796 pages
Book Rating : 4.:/5 (29 download)
Download or read book Instrument Abstracts written by and published by . This book was released on 1962 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722408121
Total Pages : 48 pages
Book Rating : 4.4/5 (81 download)
Download or read book Near Gamma Ray Spectrometer Characterization and Repair written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-09 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the work completed in the third year of the contract. The principle activities during this period were (1) the characterization of the NEAR 2 Gamma Ray Spectrometer using a neutron generator to generate complex gamma ray spectra and a large Ge Detecter to identify all the major peaks in the spectra; (2) the evaluation and repair of the Engineering Model Unit of the Gamma Ray Spectrometer for the NEAR mission; (3) the investigation of polycapillary x-ray optics for x-ray detection; and (4) technology transfer from NASA to forensic science. Groves, Joel Lee and Vajda, Stefan Goddard Space Flight Center NAS5-32486...
Author :
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.F/5 ( download)
Download or read book NSSDC Data Listing written by and published by . This book was released on 1968 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
