The energy loss and stopping power of ^(4)He ions in mylar foils were determined in a transmission geometry.The experimental stopping power data were compared to the previous measurements at higher energies.At lower e...The energy loss and stopping power of ^(4)He ions in mylar foils were determined in a transmission geometry.The experimental stopping power data were compared to the previous measurements at higher energies.At lower energies,no previous measurements exist.The present results were also compared to the commonly used semiempirically theoretical predictions by Ziegler and Manoyan,and significant deviations were observed.展开更多
Energy loss of 0.45-5.0 MeV 4He ions in Au and Ag films were measured with the Rutherford backscattering method,and the stopping powers at lower energy range were extracted by comparing with that determined by Anderso...Energy loss of 0.45-5.0 MeV 4He ions in Au and Ag films were measured with the Rutherford backscattering method,and the stopping powers at lower energy range were extracted by comparing with that determined by Anderson et al.at higher energy range.Significant deviation between the experimental data and the semiempirical calculations by TRIM-90 appears around the stopping maximum.The accuracy of our results was expected to be±l%.展开更多
Energy stragglings of ^(16)O and ^(19)F were measured with heavy-substrate Rutherford backscattering technique.Great deviation was observed between present data and Bohr’s prediction.The accuracy of present experimen...Energy stragglings of ^(16)O and ^(19)F were measured with heavy-substrate Rutherford backscattering technique.Great deviation was observed between present data and Bohr’s prediction.The accuracy of present experiment is about 10%.展开更多
The stopping powers of CaF_(2) and MoO_(3) for ^(16)O and ^(19)F were measured with heavy-substrate Rutherford backscattering technique.The present results are compared with the prediction of Bragg's rule,and stro...The stopping powers of CaF_(2) and MoO_(3) for ^(16)O and ^(19)F were measured with heavy-substrate Rutherford backscattering technique.The present results are compared with the prediction of Bragg's rule,and strong deviation was observed.The experimental error is 5%or so.展开更多
基金the National Natural Science Foundation of Chinathe Doctoral Program Foundation of Institute of Higher Education and the Postdoctoral Research Foundation.
文摘The energy loss and stopping power of ^(4)He ions in mylar foils were determined in a transmission geometry.The experimental stopping power data were compared to the previous measurements at higher energies.At lower energies,no previous measurements exist.The present results were also compared to the commonly used semiempirically theoretical predictions by Ziegler and Manoyan,and significant deviations were observed.
基金Supported by Doctoral Program Foundation of Institute of Higher Education,and Supported in part by the Zhongguancun Analytic and Measuring Center.
文摘Energy loss of 0.45-5.0 MeV 4He ions in Au and Ag films were measured with the Rutherford backscattering method,and the stopping powers at lower energy range were extracted by comparing with that determined by Anderson et al.at higher energy range.Significant deviation between the experimental data and the semiempirical calculations by TRIM-90 appears around the stopping maximum.The accuracy of our results was expected to be±l%.
基金Supported by the Analytic and Measuring Foundation of Peking University.
文摘Energy stragglings of ^(16)O and ^(19)F were measured with heavy-substrate Rutherford backscattering technique.Great deviation was observed between present data and Bohr’s prediction.The accuracy of present experiment is about 10%.
基金Supported by the National Natural Science Foundation of Chinathe Doctoral Program Foundation of Institute of Higher Education.
文摘The stopping powers of CaF_(2) and MoO_(3) for ^(16)O and ^(19)F were measured with heavy-substrate Rutherford backscattering technique.The present results are compared with the prediction of Bragg's rule,and strong deviation was observed.The experimental error is 5%or so.
