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EnglishNew calibrations of CR39 and Makrofol nuclear track detectors have been obtained using 158 A GeV Pb82+ and In49+ions; a new method for the bulk etch rate determination, using both cone height and base diameter measurements, was developed. The CR39 charge resolution based on the etch-pit base area measurements is adequate to identify nuclear fragments in the interval 7 ⩽ Z/β ⩽ 49. For CR39 the detection threshold is at REL ∼50 MeV cm2 g−1, corresponding to a nuclear fragment with Z/β ∼ 7. Base cone area distributions for Makrofol foils exposed to Pb82+ ions have shown for the first time all peaks due to nuclear fragments with Z > 50; the distribution of the etched cone heights shows well separated individual peaks for Z/β ∼ 78 to 83 (charge pick-up). The Makrofol detection threshold is at REL ∼2700 MeV cm2 g−1, corresponding to a nuclear fragment with Z/β = 50.
| Titolo: | Bulk etch rate measurements and calibrations of plastic nuclear track detectors |
| Autore/i: | S. Balestra; COZZI, MICHELA; GIACOMELLI, GIORGIO MARIA; GIACOMELLI, ROBERTO; GIORGINI, MIRIAM; KUMAR, AMIT; G. Mandrioli; S. Manzoor; MARGIOTTA, ANNARITA; MEDINACELI VILLEGAS, EDUARDO; PATRIZII, LAURA; POPA, VLAD; I. E. Qureshi; M. A. Rana; SIRRI, GABRIELE; SPURIO, MAURIZIO; V. Togo; C. Valieri |
| Autore/i Unibo: | |
| Anno: | 2007 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.nimb.2006.11.056 |
| Abstract: | New calibrations of CR39 and Makrofol nuclear track detectors have been obtained using 158 A GeV Pb82+ and In49+ions; a new method for the bulk etch rate determination, using both cone height and base diameter measurements, was developed. The CR39 charge resolution based on the etch-pit base area measurements is adequate to identify nuclear fragments in the interval 7 ⩽ Z/β ⩽ 49. For CR39 the detection threshold is at REL ∼50 MeV cm2 g−1, corresponding to a nuclear fragment with Z/β ∼ 7. Base cone area distributions for Makrofol foils exposed to Pb82+ ions have shown for the first time all peaks due to nuclear fragments with Z > 50; the distribution of the etched cone heights shows well separated individual peaks for Z/β ∼ 78 to 83 (charge pick-up). The Makrofol detection threshold is at REL ∼2700 MeV cm2 g−1, corresponding to a nuclear fragment with Z/β = 50. |
| Data prodotto definitivo in UGOV: | 2013-06-29 22:27:13 |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/11585/130504
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