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A Cerenkov-delta E-Cerenkov detector for high energy cosmic ray isotopes and an accelerator study of Ar-40 and Fe-56 fragmentation : thesis

Author: Koon H Lau; California Institute of Technology.; United States. National Aeronautics and Space Administration.
Publisher: Pasadena, Calif. : California Institute of Technology ; [Washington, D.C.] : [National Aeronautics and Space Administration], [1985]
Series: NASA contractor report, NASA CR-176028.
Edition/Format:   Book   Microform : National government publication : Microfiche : EnglishView all editions and formats
Summary:
"A high energy cosmic ray detector--the High Energy Isotope Spectrometer Telescope (HEIST) is described. It is a large area (0.25 m(swp 2) SR) balloon borne isotope spectrometer designed to make high resolution measurements of isotopes in the element range from neon to nickel (10 Z 28) at energies of about 2 GeV nucleon. HEIST determines the mass of individual nuclei by measuring both the change in the Lorentz  Read more...
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Additional Physical Format: Paper version:
Lau, Koon H.
Cerenkov-delta E-Cerenkov detector for high energy cosmic ray isotopes and an accelerator study of Ar-40 and Fe-56 fragmentation.
vii, 213 p.
(OCoLC)702111810
Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: Koon H Lau; California Institute of Technology.; United States. National Aeronautics and Space Administration.
OCLC Number: 130129753
Notes: "June 13, 1985."
"In partial fulfullment of the requirements for the degree of Doctor of Philosophy."
Reproduction Notes: Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1985. 3 microfiches : negative.
Description: vii, 213 pages : illustrations.
Series Title: NASA contractor report, NASA CR-176028.
Other Titles: Cerenkov delta E Cerenkov detector for high energy cosmic ray isotopes and an accelerator
Responsibility: by Koon H. Lau.

Abstract:

"A high energy cosmic ray detector--the High Energy Isotope Spectrometer Telescope (HEIST) is described. It is a large area (0.25 m(swp 2) SR) balloon borne isotope spectrometer designed to make high resolution measurements of isotopes in the element range from neon to nickel (10 Z 28) at energies of about 2 GeV nucleon. HEIST determines the mass of individual nuclei by measuring both the change in the Lorentz factor (delta gamma) that results from traversing the NaI stack, and the energy loss (delta E) in the stack. Since the total energy of an isotope is given by E = (gamma M), the mass M can be determined by M = delta E delta, gamma. The instrument is designed to achieve a typical mass resolution of 0.2 amu. The isotopic composition of the fragments from the breakup of high energy An-40 and Fe-56 nuclei are measured experimentally. Isotope yields are compared with calculated yields based on semi-empirical cross-section formulae."--Abstract.

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