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.
Bulk etch rate measurements and calibrations of plastic nuclear track detectors / S. Balestra; M. Cozzi; G. Giacomelli; R. Giacomelli; M. Giorgini; A. Kumar; G. Mandrioli; S. Manzoor; A.R. Margiotta; E. Medinaceli; L. Patrizii; V. Popa; I.E. Qureshi; M.A. Rana; G. Sirri; M. Spurio; V. Togo; C. Valieri. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - STAMPA. - 254:(2007), pp. 254-258. [10.1016/j.nimb.2006.11.056]
Bulk etch rate measurements and calibrations of plastic nuclear track detectors
COZZI, MICHELA;GIACOMELLI, GIORGIO MARIA;GIACOMELLI, ROBERTO;GIORGINI, MIRIAM;KUMAR, AMIT;MARGIOTTA, ANNARITA;MEDINACELI VILLEGAS, EDUARDO;PATRIZII, LAURA;POPA, VLAD;SIRRI, GABRIELE;SPURIO, MAURIZIO;
2007
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
