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arXiv physics/0610227physics.ins-det
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塑料核径迹探测器体腐蚀速率的测量与刻度

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… 展开作者

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

摘要:

使用158 A GeV Pb(82+)和In(49+)离子获得了CR 39和Makrofol核径迹探测器的新校准;开发了一种使用锥高和底径测量的体蚀刻速率测定的新方法。基于蚀坑底面积测量的CR 39电荷分辨率足以识别间隔7 <= Z/β <= 49的核碎片。对于CR 39,检测阈值为REL~50 MeV cm ^2/g,对应于Z/β ~7的核碎片。暴露于Pb(82+)离子的Makrofol箔的基锥面积分布首次显示了Z > 50的核碎片的所有峰;蚀刻锥高度的分布显示了Z/β = 78 - 83(电荷拾取)的分离良好的各个峰。Makrofol的检测阈值为REL 2700 MeV cm ^2/g,对应于Z/β约为50的核碎片。

英文摘要:

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.

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