On geometry of tracks in dielectric nuclear track detectors

Henke, R.P.; Benton, E.V.

doi:10.1016/0029-554x(71)90250-3

Cited by 149 publications

(30 citation statements)

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“…This indicates that the observed differences in the data for the front and back surfaces is due to energy deposition effects in the SSNTD, which is known to affect the resulting track shape 26 . The ratio of track to bulk etch rate, as discussed in Sec.…”

Section: Discussionmentioning

confidence: 98%

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Increasing the energy dynamic range of solid-state nuclear track detectors using multiple surfaces

Zylstra

Rinderknecht

Sinenian

et al. 2011

Review of Scientific Instruments

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Solid-state nuclear track detectors, such as CR-39, are widely used in physics and in many inertial confinement fusion (ICF) experiments. In the ICF experiments, the particles of interest, such as D 3 He-protons, have ranges of order of the detector thickness. In this case, the dynamic range of the detector can be extended by recording data on both the front and back sides of the detector. Higher-energy particles which are undetectable on the front surface can then be measured on the back of the detector. Studies of track formation under the conditions on the front and back of the detector reveal significant differences. Distinct front and back energy calibrations of CR-39 are therefore necessary and are presented for protons. Utilizing multiple surfaces with additional calibrations can extend the range of detectable energies on a single piece of CR-39 by up to 7-8 MeV. The track formation process is explored with a Monte Carlo code, which shows that the track formation difference between front and back is due to the non-uniform ion energy deposition in matter.

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Section: Discussionmentioning

confidence: 98%

“…The theory of track formation in SSNTDs is welldeveloped 26,27 . In the idealized case the particle's energy deposition in the bulk material creates a region in which the chemical composition of the material is altered.…”

Section: Track Formationmentioning

confidence: 99%

Increasing the energy dynamic range of solid-state nuclear track detectors using multiple surfaces

Zylstra

Rinderknecht

Sinenian

et al. 2011

Review of Scientific Instruments

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“…In amorphous solid state detectors such as plastics and glasses, the only parameter that Data\IJP\July 2009\05 Mohan Singh.p65 affects the track opening shape is the angle of the projectile with the detector surface i.e. the dip angle [10,11]. By the variation of dip angle the eccentricity of the elliptical etch pit opening change.…”

Section: Introductionmentioning

confidence: 99%

Different shapes of tracks in phlogopite, biotite and soda lime glass

Singh

2009

Indian J Phys

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Etched track opening geometries in Biotite, Phlogopite and soda-lime glass irradiated with swift heavy ions [ 197 Au(11.64 MeV/n), 136 Xe(11.56 MeV/n), 58 Ni(11.56 MeV/n)] at different angle of incidence have been studied using appropriate chemical etching technique. Different geometries (Hexagonal, irregular polygon, triangular in case of Biotite and Phlogopite, and circular & elliptical in case of soda lime glass detector) of heavy ion tracks are reported in the present investigations using optical microscope. The different shapes of these heavy ions track geometries are found to be related with various target-projectile parameters (viz : type of projectiles, energy, stopping power, angle of incidence of the projectile, density of defects and its reactivity with etchant, etching conditions and chemical structure of the detectors). The dependence of different shapes of heavy ion tracks in isotropic and anisotropic medium on the variation of radiation damage densities along the ion trajectories have also been discussed in the present paper.

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“…The etched out precise shape and size of conical hole in the plastic correlates with the high precision path, energy, and the identity of the particle [35,37,38] that has traversed the medium causing the loss of uniformity in the medium. The chemical etching rate at a given point correlates with the amount of damage received which, in turn, correlates with the rate of energy loss by the ion.…”

Section: Transience Of Information and Emergence Of Modelsmentioning

confidence: 99%

Fundamentals of Natural Representation

Singh

2018

Information

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Our understanding of the natural universe is far from being comprehensive. The following questions bring to the fore some of the fundamental issues. Is there a reality of information associated with the states of matter based entirely on natural causation? If so, then what constitutes the mechanism of information exchange (processing) at each interaction of physical entities? Let the association of information with a state of matter be referred to as the representation of semantic value expressed by the information. We ask, can the semantic value be quantified, described, and operated upon with symbols, as mathematical symbols describe the material world? In this work, these questions are dealt with substantively to establish the fundamental principles of the mechanisms of representation and propagation of information with every physical interaction. A quantitative method of information processing is derived from the first principles to show how high level structured and abstract semantics may arise via physical interactions alone, without a need for an intelligent interpreter. It is further shown that the natural representation constitutes a basis for the description, and therefore, for comprehension, of all natural phenomena, creating a more holistic view of nature. A brief discussion underscores the natural information processing as the foundation for the genesis of language and mathematics. In addition to the derivation of theoretical basis from established observations, the method of information processing is further demonstrated by a computer simulation.Keywords: physics of representation; reality of information in nature; semantic value of information; equivalence of physical interaction and information processing; emergence of abstract semantics

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On geometry of tracks in dielectric nuclear track detectors

Abstract: TWO-WEEK LOAN COPY This is a Library Circulating Copy which may be borrowed for two weeks. For a personal retention copy, call Tech. Info. Division, Ext. 5545 UCRL-20852 Preprint c.~ c:

Cited by 149 publications

References 1 publication

Increasing the energy dynamic range of solid-state nuclear track detectors using multiple surfaces

Increasing the energy dynamic range of solid-state nuclear track detectors using multiple surfaces

Different shapes of tracks in phlogopite, biotite and soda lime glass

Fundamentals of Natural Representation

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