@article{oai:repo.qst.go.jp:00080223, author = {Kanasaki, Masato and Sakamoto, Keita and Asai, Takafumi and Jinno, Satoshi and Kodaira, Satoshi and Yamauchi, Tomoya and Oda, Keiji and Fukuda, Yuji and Takafumi, Asai and Satoshi, Kodaira and Yuji, Fukuda}, journal = {High Energy Density Physics}, month = {Jul}, note = {A combination of CR-39 track detectors and a stepwise energy filter is a simple method to measure the energy spectrum of laser-accelerated protons. The number of etch pits in each area of the CR-39 detector is expected to represent the energy spectrum because the different thicknesses of the filters result in different areas into which the energy reaches in CR-39. However, the higher energy regions may overlap depending on the sensitivity of CR-39. To avoid overlapping, i.e., overestimation of the number of etch pits for each energy region, a correction method for the energy spectrum from the number of etch pits was developed. Based on the calculation results of the reaching energy values and incident energy ranges for CR-39, etch pits are selected that should be counted in each area. CR-39 with stepwise energy lters provides a corrected energy spectrum of laser-accelerated protons by applying the developed method.}, title = {Correction method for the energy spectrum of laser-accelerated protons measured by CR-39 track detectors with stepwise energy filters}, volume = {37}, year = {2020} }