用“Troitsk nu-mass”实验研究14-25 keV电子在氢和氘分子上的散射
Electron scattering on hydrogen and deuterium molecules at 14-25 keV by the "Troitsk nu-mass" experiment
摘要：
我们已经进行了精确的测量电子散射分子氢和氘通过使用“Troitsk nu质量”设置。通过电子枪产生的电子具有优于0.3eV的能量线宽度。电子能量分别为14、17、18.7、19和25 keV。无窗气态氚源（WGTS）填充氢同位素作为靶。调整总柱密度使电子平均自由程长度为0.35- 0.7，用磁绝热准直静电谱仪测量散射电子积分谱，相对能量分辨率为8.3 × 10 ~（-5）。结果，提取了两种同位素的分子激发和电离光谱的形状。我们没有发现氢和氘靶之间的任何差异。还提取了相对能量依赖性。
英文摘要：
We've performed precise measurements of electron scattering on molecular hydrogen and deuterium by using the "Troitsk nu-mass" setup. Electrons were generated by the electron gun with an energy line width better than 0.3 eV. The electron energies were 14, 17, 18.7, 19 and 25 keV. The windowless gaseous tritium source (WGTS) was filled by hydrogen isotopes and served as a target. The total column density was adjusted to form a length of 0.35--0.7 of the electron mean free path. The integral spectrum of scattered electrons was measured by the electrostatic spectrometer with a magnetic adiabatic collimation and relative energy resolution 8.3 10^{-5}. As a result, the shapes of molecular excitation and ionization spectra were extracted for both isotopes. We did not find any difference between hydrogen and deuterium targets. The relative energy dependence was extracted too.
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