Journal ArticleDOI
Characteristics of plastic CR-39 for detection of relativistic cosmic ray heavy nuclei
Takayoshi Hayashi,Tadayoshi Doke +1 more
TLDR
In this article, a stack of plastic CR-39 and nuclear emulsions was exposed at a vertical cut-off rigidity of 10.3 GV and an atmospheric depth of 7 g/cm2 for 30 h in May, 1979.About:
This article is published in Nuclear Instruments and Methods.The article was published on 1980-08-15. It has received 39 citations till now. The article focuses on the topics: Cosmic ray.read more
Citations
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Journal ArticleDOI
Estimation of dose equivalent in STS-47 by a combination of TLDS and CR-39
TL;DR: Using the LET distribution obtained by CR-39 plastic track detectors and the total absorbed dose obtained by TLDs, whose response for relativistic heavy ions is proportional to the absorbed dose, the dose equivalents at various locations inside the Space Shuttle (STS-47) have been estimated as mentioned in this paper.
Journal ArticleDOI
Response of different types of CR-39 to energetic ions
TL;DR: In this paper, the effect of adding small amounts of antioxidants to the monomer before casting was studied, covering a wide LET, Z and β region, and it was shown that the most sensitive of these materials registers tracks of relativistic boron ions and 16 MeV protons at normal incidence.
Journal ArticleDOI
Improvements in the sensitivity and the etching properties of CR-39
TL;DR: In this paper, the authors improved the sensitivity and etching properties of CR-39 plastic track detectors by adding small quantities of chlorinated compounds to pure CR39, such as hexachlorobutadiene and diallyl chlorendate.
Journal ArticleDOI
JACEE emulsion chambers for studying the energy spectra of high energy cosmic ray protons and helium
T. H. Burnett,Shoji Dake,M. Fuki,John C. Gregory,T. Hayashi,T. Hayashi,R. Holynski,J. Iwai,W. V. Jones,A. Jurak,J. J. Lord,Osamu Miyamura,H. Oda,T. Ogata,Thomas A. Parnell,T. Saito,T. Tabuki,Y. Takahashi,Y. Takahashi,Y. Takahashi,T. Tominaga,John W. Watts,B. Wilczynska,R. J. Wilkes,W. Wolter,B. Wosiek +25 more
TL;DR: In this paper, a series of stratospheric balloon flights were used to study nuclear interactions, charge composition, and energy spectra of cosmic ray nuclei over the energy range 10 12 -10 15 eV charge identification involves grain, gap, and/or delta-ray counting in emulsion plates having different sensitivities on two sides of an acrylic base Electromagnetic cascade energies are measured with resolutions of about 25% by the three-dimensional track counting method.
Journal ArticleDOI
Azimuthally controlled observation of heavy cosmic-ray primaries by means of the balloon-borne emulsion chamber
Eiji Kamioka,M. Hareyama,M. Ichimura,Yoshiaki Ishihara,Tadashi Kobayashi,H. Komatsu,Shuichi Kuramata,K. Maruguchi,H. Matsutani,A. Mihashi,Hiroyuki Mito,T. Nakamura,H. Nanjo,T. Ouchi,Tomohiko Ozawa,T. Shibata,H. Sugimoto,Z. Watanabe +17 more
TL;DR: In this article, an emulsion chamber with an area of 1.22 m 2 on board of the balloon at an atmospheric depth of 8.8 h, which has been azimuthally controlled within the accuracy of Δφ = 0.5°.
References
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Journal ArticleDOI
A nuclear-track-recording polymer of unique sensitivity and resolution
TL;DR: In this paper, a commercially available, optically clear, amorphous, thermoset plastic in which nuclear particle tracks can be revealed by etching in a hot NaOH solution is described.
Journal ArticleDOI
On geometry of tracks in dielectric nuclear track detectors
R.P. Henke,E.V. Benton +1 more
TL;DR: In this paper, the most relevant aspects of etched particle track geometry are derived and discussed in considerable detail, and track specification and measurement parameters are developed for a variety of different situations.
Journal ArticleDOI
Detection of relativistic cosmic ray iron nuclei in the plastic track detector CR-39
TL;DR: In this paper, the first successful detection of highly relativistic cosmic ray iron group nuclei in the new type of solid state track detector, CR-39 (Allyl diglycol carbonate), in a stack composed of these plastics, nuclear emulsions and other types of plastic detectors, which was exposed in a balloon flight from Hyderabad, India, at 6 mb residual atmosphere for 8 h.
Journal ArticleDOI
The Chemical Composition and the Energy Spectrum of Heavy Nuclei in the Cosmic Radiation above 10 GeV/nucleon
TL;DR: In this paper, a total of 7695 heavy nuclei were located in the Brawley emulsion stack and the error in energy estimation was about 30% and that in charge estimation was 0.25 units of charge for nuclei with z ≤ 9 and 0.5 for the iron group.