激波阵面后尘埃粒子的电子感应加速器加速饱和
On saturation of betatron acceleration of dust particles behind shock fronts
摘要：
本文考虑了超新星强激波阵面后面尘埃粒子的感应加速器加速饱和的可能性。有人认为，非热尘埃破坏的效率应大大低于从辐射冲击波后面的尘埃粒子的电子感应加速器加速的传统描述估计的值。非热破坏的抑制可能与速度超过Alfvén速度3倍的强激波后尘埃成分中产生的镜像不稳定性有关。不稳定性的发展特征的时间尺度短得多的超新星遗迹的年龄，因此它的影响，尘埃销毁的效率可以是实质性的：在冲击波速度100公里秒$^{-1}<v_s<300$公里秒$^{-1}$的破坏效率可以是一个数量级低于正常估计。
英文摘要：
Possible saturation of betatron acceleration of dust particles behind strong shock fronts from supernovae is considered. It is argued that the efficiency of the nonthermal dust destruction should be substantially lower than the value estimated from a traditional description of betatron acceleration of dust grains behind radiative shock waves. The inhibition of the nonthermal destruction can be connected with the mirror instability developed in the dust component behind strong shocks with the velocity 3 times exceeding the Alfvén speed. The instability develops on characteristic time scales much shorter the age of a supernova remnant, thus its influence on the efficiency of dust destruction can be substantial: in the range of shock velocities 100 km s$^{-1}<v_s<300$ km s$^{-1}$ the destruction efficiency can be an order of magnitude lower that normally estimated.
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