Bulk Etch Rate Measurements and Calibrations of Plastic Nuclear Track Detectors
Oct, 200611 pages
Published in:
- Nucl.Instrum.Meth.B 254 (2007) 254-258
e-Print:
- physics/0610227 [physics.ins-det]
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Abstract: (arXiv)
New calibrations of CR39 and Makrofol nuclear track detectors have been obtained using 158 A GeV Pb (82+) and In (49+) 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 measurement is adequate to identify nuclear fragments in the interval 7 <= Z/beta <= 49. For CR39 the detection threshold is at REL~50 MeV cm^2/g, corresponding to a nuclear fragment with Z/beta~7. Base cone area distributions for Makrofol foils exposed to Pb (82+) 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/beta = 78 - 83 (charge pickup). The Makrofol detection threshold is at REL 2700 MeV cm^2/g, corresponding to a nuclear fragment with Z/beta~50.Note:
- 11 pages, 5 EPS figures. Submitted to Nucl. Instr. Meth. B
- 34.90.+q
- 29.40.Wk
- Nuclear track detector
- Bulk etch rate
- Relativistic ions
- Nuclear fragmentation
- charge: resolution
- calibration
- plastics: track sensitive
- heavy ion: track
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