Measurements of cross sections for detachment of electrons from C- and O- ions by electron impact
Measurements of cross sections for detachment of electrons from C- and O- ions by electron impact
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通过电子撞击测量 C 离子和 O 离子电子脱离的横截面
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
K. Dolder
中科院分区：
文献类型：
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作者：
B. Peart;R. Forrest;K. Dolder
截面已被测量为脱离电子碰撞从C-和O-离子的相互作用能量在10和1000 eV之间。对于C-，截面在18.2eV处达到最大值1.85*10-15 cm 2，而对于O-，最大值在28.1eV处为6.48*10-16 cm 2。对于这两种离子，只有在能量大于阈值约300倍时才达到Bethe渐近线。结构中观察到的横截面为O-在接近18 eV的能量，这表明一个短暂的激发态的O2-的形成。
Cross sections have been measured for detachment by electron impact from C- and O- ions for interaction energies between 10 and 1000 eV. For C- the cross section attained a maximum value 1.85*10-15 cm2 at 18.2 eV whilst for O- the maximum value was 6.48*10-16 cm2 at 28.1 eV. For both ions the Bethe asymptote was reached only at energies greater than about 300 times threshold. Structure was observed in the cross section for O- at energies close to 18 eV which suggests the formation of a short-lived excited state of O2-.