On the use of CR-39 PNTD with AFM analysis in measuring proton-induced target fragmentation particles
- Kodaira, S.
- Konishi, T.
- Kitamura, H.
- Kurano, M.
- Kawashima, H.
- Uchihori, Y.
- Nishio, T.
- Yasuda, N.
- Ogura, K.
- Sihver, Lembit
- Benton, E. R.
DOIAbstract
In addition to energy loss by ionization process, protons of energy >similar to 50 MeV, such as those used in proton radiotherapy, can undergo nuclear interactions with nuclei of Z > 1, resulting in the production, of short range (<20 gm), high-LET (linear energy transfer) target fragment particles. One of the few methods to detect these short-range particles is by means of CR-39 plastic nuclear track detector (PNTD) analyzed with an atomic force microscope (AFM). However, due to the LET-dependent angular sensitivity of CR-39 PNTD, multiple detectors exposed at a range of incident angles to the primary proton beam, must be analyzed in order to accurately determine the LET spectrum, absorbed dose and dose equivalent. The LET spectrum of 160 ...
Add to ORKG