Characterization and calibration of a SSNTD for heavy-ion detection and strangelet search in cosmic rays

Bhowmik, Debipreeta; Dey, S. S.; Maulik, A.; Raha, S.; Saha, S.; Saha, Swapan K.; Syam, D.

doi:10.1016/j.nimb.2010.10.028

Cited by 16 publications

(14 citation statements)

References 7 publications

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“…By one method [12] V T is calculated by measuring the length L h (Fig. 1a) of the etched out section of the latent track and the etching time (t).…”

Section: Methods To Determine the Etch-rate Ratiomentioning

confidence: 99%

A comparative study of alternative methods to determine the response of poly-ethylene terephthalate nuclear track detector

Bhattacharyya

Dey

Ghosh

et al. 2018

Nuclear Instruments and Methods in Physics Research Section B:

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“…By one method [12] V T is calculated by measuring the length L h (Fig. 1a) of the etched out section of the latent track and the etching time (t).…”

Section: Methods To Determine the Etch-rate Ratiomentioning

confidence: 99%

A comparative study of alternative methods to determine the response of poly-ethylene terephthalate nuclear track detector

Bhattacharyya

Dey

Ghosh

et al. 2018

Nuclear Instruments and Methods in Physics Research Section B:

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“…This implies different track lengths for the two ions. By [8,9], we can get a calibration curve for PET as shown in Fig. 8.…”

Section: Particles/cmmentioning

confidence: 99%

“…We have also shown that it has a much higher detection threshold compared to other widely used SSNTDs like CR-39, Lexan etc. We carried out systematic studies on PET to determine its bulk etch rate, ideal etching condition and also its charge response characteristics to 16 O, 32 S, 56 Fe, 238 U ions [8,9]. Higher detection threshold makes PET an ideal choice as detector material for rare event search in cosmic ray research as it effectively suppresses the dominant low Z background.…”

Section: Introductionmentioning

confidence: 99%

Calibration of a solid state nuclear track detector (SSNTD) with high detection threshold to search for rare events in cosmic rays

Dey

Gupta

Maulik

et al. 2011

Astroparticle Physics

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We have investigated a commercially available polymer for its suitability as a solid state nuclear track detector (SSNTD). We identified that polymer to be polyethylene terephthalate (PET) and found that it has a higher detection threshold compared to many other widely used SSNTDs which makes this detector particularly suitable for rare event search in cosmic rays as it eliminates the dominant low Z background. Systematic studies were carried out to determine its charge response which is essential before any new material can be used as an SSNTD. In this paper we describe the charge response of PET to 129 Xe, 78 Kr and 49 Ti ions from the REX-ISOLDE facility at CERN, present the calibration curve for PET and characterize it as a nuclear track detector.

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“…Detection threshold of PET is very high; it detected fission fragments but did not detect alpha particles when exposed to Cf 252 source [1]. We have optimised the etching conditions and characterization and calibration have been done for this detector using several different ions from accelerators in India and abroad [2][3][4][5]. Now PET is a well established passive detector.…”

Section: Introductionmentioning

confidence: 99%

“…To study the cosmic ray flux of heavy ions in the polar region a stack of solid state nuclear track detectors CR-39 and PET have been exposed at Antarctica. PET films having high track registration threshold (Z/β>140) [2] were unable to detect protons and alpha particles. PET detector automatically eliminates the large background of lighter cosmic ray particles.…”

Section: Introductionmentioning

confidence: 99%

Cosmic ray detection and Identification at Antarctica in a ground level experiment with NTD

Dey¹,

Bhattacharyya²,

Ghosh³

et al. 2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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Searching for Strangelets (small pieces of strongly interacting matter comprising of nearly equal numbers of u, d and s quarks) in cosmic rays, an experiment has been done at Antarctica using passive detectors. We have exposed CR-39 and PET (polyethylene terephthalate sheets) at Maitri and Bharati experimental stations of India. High detection threshold detector PET limits the detection of cosmic rays to relatively high Z and low energy particles. In this report we will present charge response parameters (Vt /Vb) for charged cosmic ray particles observed at ground level. Track parameters viz. diameters, depths and incidence angles of observed charged particles in CR-39 show wide distributions. Identification of different groups of particles has been done from the distribution of charge response parameters (V t /V b) with the help of the calibration curve of CR-39. Flux of charged particles observed in CR-39 is ~6.2x10-4 /(cm 2 .sec.sr) at both the places.

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Characterization and calibration of a SSNTD for heavy-ion detection and strangelet search in cosmic rays

Cited by 16 publications

References 7 publications

A comparative study of alternative methods to determine the response of poly-ethylene terephthalate nuclear track detector

A comparative study of alternative methods to determine the response of poly-ethylene terephthalate nuclear track detector

Calibration of a solid state nuclear track detector (SSNTD) with high detection threshold to search for rare events in cosmic rays

Cosmic ray detection and Identification at Antarctica in a ground level experiment with NTD

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