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SUMMARY:Synchrotron radiation methods for registration of the ejection of 
 particles from the free surface of shock-loaded metals
DTSTART;VALUE=DATE-TIME:20160706T052000Z
DTEND;VALUE=DATE-TIME:20160706T054000Z
DTSTAMP;VALUE=DATE-TIME:20260417T094322Z
UID:indico-contribution-1168@indico.inp.nsk.su
DESCRIPTION:Speakers: Konstantin Ten (LIH SB RAS)\nWhen a strong shock wav
 e leaves a metal\, flows of particles of different sizes are ejected from 
 the wave’s free surface (shock-wave "dusting"\, ejecta) [1\,2]. Unlike a
  cumulative jet\, such a flow consists of separate particles having a size
  of a few microns to hundreds of microns. It was assumed that there are al
 so finer particles in such a flow\, but the existing techniques are not ab
 le to resolve them.\n\nThis report presents the results of experiments usi
 ng SR from the colliders VEPP-3 and VEPP-4 at BINP. Precision measurement 
 of transmitted SR (of an energy of 2 GeV on VEPP-3) was applied to explora
 tion of microparticle flows from a free surface of various materials (copp
 er\, tin\, and tantalum). Mass distributions along microjets originating f
 rom micron-sized slits were obtained. Dynamic detection of small-angle X-r
 ay scattering (SAXS) of synchrotron radiation (SR) from the collider VEPP-
 4M (energy of 4 GeV) was implemented on the facility SYRAFEEMA (Synchrotro
 n Radiation Facility for Exploring Energetic Materials). A technique of SA
 XS 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 HM
 X were detected for the first time.\n\n**1**. V. A. Ogorodnikov\, A. G. Iv
 anov\, A. L. Mikhailov\,\, N.I. Kryukov\, A.P. Tolochko\, V.A. Golubev.  P
 article ejection from the shocked free surface of metals and diagnostic me
 thods for these particles // Combustion\, Explosion and Shock Waves\, 1998
 \, v.34\, No 6\, pages 696-700. \n\n**2**. Thibaut De Resseguier\, Didier 
 Loison\, Emilien Lescoute\, Loic Signor\, Andre Dragon. Dynamic Fragmentat
 ion of Laser Shock-melted metals: Some Experimental Advances. Journal of t
 he Theoretical and Applied Mechanics\, 2010\, 48\, 4\, pp. 957-972\, Warsa
 w.\n\nhttps://indico.inp.nsk.su/event/3/contributions/1168/
LOCATION:Budker INP Conference Hall
URL:https://indico.inp.nsk.su/event/3/contributions/1168/
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