Waibel E, Willems G
Phys Med Biol. 1987 Mar;32(3):365-70. doi: 10.1088/0031-9155/32/3/006.
Stopping power data for protons in tissue-equivalent gas (64.4% CH4 + 32.4% CO2 + 3.2% N2, partial pressures) were derived from experimentally determined ranges and from differential ionisation distributions using the differential energy required per ion pair formed to convert ionisation to energy loss. The proton energy covered the region from 1 to 100 keV. The results are compared with other data available. In general the present experimental stopping power data tend to higher values than calculated data for energies lower than 20 keV; between 20 and 100 keV they agree well within the stated uncertainties.
组织等效气体（64.4% CH₄ + 32.4% CO₂ + 3.2% N₂，分压）中质子的阻止本领数据，是通过实验测定的射程以及利用每形成一个离子对将电离转化为能量损失所需的微分能量的微分电离分布得出的。质子能量覆盖了从1到100 keV的范围。将结果与其他可得数据进行了比较。一般来说，对于能量低于20 keV的情况，当前的实验阻止本领数据往往比计算数据的值更高；在20至100 keV之间，它们在规定的不确定度范围内吻合得很好。
