Proton elastic scattering cross-sections on F, C and Li from 3 to 7MeV

Abstract

Differential cross-sections for proton elastic scattering on sodium and for c-ray emission from the reactions 23 Na(p,p 0 c) 23 Na (E c = 440 keV and E c = 1636 keV) and 23 Na(p,a 0 c) 20 Ne (E c = 1634 keV) were measured for proton energies from 2.2 to 5.2 MeV using a 63 lg/cm 2 NaBr target evaporated on a self-supporting thin C film. The c-rays were detected by a 38% relative efficiency Ge detector placed at an angle of 135°with respect to the beam direction, while the backscattered protons were collected by a Si surface barrier detector placed at a scattering angle of 150°. Absolute differential crosssections were obtained with an overall uncertainty estimated to be better than ±6.0% for elastic scattering and ±12% for c-ray emission, at all the beam energies.To provide a convincing test of the overall validity of the measured elastic scattering cross-section, thick target benchmark experiments at several proton energies are presented.

Meso-scale characterization of lithium distribution in lithium-ion batteries using ion beam analysis techniques

“…In particular, for PIGE experiments, the cross-section for the 7 Li(p,ng 1-0 ) 7 Be and 7 Li(p,pg 1-0 ) 7 Li nuclear reactions have been accurately reported by Caciolli et al [14] for the proton beam energies in the range from 3.0 to 5.7 MeV for a detection angle of 135 to the beam direction. The crosssection for lithium characterization by using the 7 Li(p,a) 4 He nuclear reaction, which is the most suitable one for Li-depth profiling (see Section 3.2), has been reported by Paneta et al [15] for proton beam energies in the range from 1.7 to 7.0 MeV for detection angles of 140 , 150 , 160 and 170 to the beam direction.…”

“…The Li distribution was characterized by means of the 7 Li(p,ng 1-0 ) 7 Be E g ¼ 429 keV and 7 Li(p,pg 1-0 ) 7 Li E g ¼ 478 keV [18] nuclear reactions. Measurements were carried out at the m-beam line of TIARA-JAEA [25] using a H þ beam at an energy of 3.0 MeV.…”

Proton elastic scattering differential cross-sections for 12C

“…Data from the present work are plotted in Fig. 2a-d along with data from literature [3][4][5][6][7][8][9][10][11], for comparison, although above 4.5 MeV very few datasets exist. All the obtained differential cross-section values are also presented -following the usual convention -in Table 1.…”

“…In the particular case of proton elastic scattering from carbon, differential cross-section datasets and angular distributions from the present work, and from [5][6][7], and [3] were mainly considered for the evaluation. The calculations for 12 C are relatively simplified by the fact that it is an even-even nucleus (J p = 0 + ), thus no spinmixing phenomena are present.…”

“…Nevertheless, above this beam energy, there is a certain lack of available and/or coherent datasets in literature suitable for IBA. Moreover, the few existing datasets [3][4][5][6][7][8][9][10][11] are in certain cases discrepant. Thus, in the present work, in an attempt to clarify the situation, the differential cross-sections of proton elastic scattering on carbon were measured between 140°and 170°, in steps of 10°, for the proton beam energy range between 2.7 and 7 MeV, with a variable energy step.…”