【摘 要】
：
When a strong shock wave leavesa metal,flows of particles of different sizes are ejected from the waves free surface(shock-wave "dusting",ejecta)[1,2].Unlik
【机 构】
：
LavrentyevInstituteofHydrodynamicSBRAS,Novosibirsk630090,Russia;NovosibirskStateUniversity,Novosibir
【出 处】
：
第五届爆炸、冲击波和高应变率现象国际研讨会(International Workshop on Explosion, S
论文部分内容阅读
When a strong shock wave leavesa metal,flows of particles of different sizes are ejected from the waves free surface(shock-wave "dusting",ejecta)[1,2].Unlike a cumulative jet,such aflow consists of separate particleshaving a size of a few microns to hundreds of microns.It was assumed that there are also finer particles in such aflow,but the existing techniques are not able to resolve them.This report presents the results of experiments using SR from the colliders VEPP-3 and VEPP-4 at BINP.Precision measurement of transmitted SR(of an energyof 2 GeV on VEPP-3)was applied to exploration ofmicroparticle flows from a free surface of various materials(copper,tin,and tantalum).Mass distributions along microjetsoriginating from micron-sized slits were obtained.Dynamic detection of small-angle X-ray scattering(SAXS)of synchrotron radiation(SR)from the collider VEPP-4M(energy of 4 GeV)was implemented on the facility SYRAFEEMA(Synchrotron Radiation Facility for ExploringEnergetic Materials).A technique of SAXS measurement on this facility enables detection of nanoparticles ranging in size from 4 to 200 nm.Flows of nanoparticles of about 100 nm in size from a surface of smooth foil(tin and tantalum)affected by compressed HMX were detected for the first time.
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