Detection of Microparticles in Dynamic Processes
Full article
| Common |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
XXXI International Conference on Equations of State for Matter
01-06 Mar 2016
,
Elbrus
|
| Journal |
Journal of Physics: Conference Series
ISSN: 1742-6588
, E-ISSN: 1742-6596
|
| Output data |
Year: 2016,
Volume: 774,
Article number
: 012070,
Pages count
: 8
DOI:
10.1088/1742-6596/774/1/012070
|
| Authors |
Ten K A
1,2
,
Pruuel E R
1
,
Kashkarov A O
1,4
,
Rubtsov I A
1,4
,
Shechtman L I
2,4
,
Zhulanov V V
2,4
,
Tolochko B P
2,3
,
Rykovanov G N
5
,
Muzyrya A K
5
,
Smirnov E B
5
,
Stolbikov M Yu
5
,
Prosvirnin K M
5
|
| Affiliations |
| 1 |
Lavrentyev Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences
|
| 2 |
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences
|
| 3 |
Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the
Russian Academy of Sciences
|
| 4 |
Novosibirsk State University
|
| 5 |
Federal State Unitary Enterprise “Russian Federal Nuclear Center—Academician Zababakhin All-Russian Research Institute of Technical Physics”
|
|
When a metal plate is subjected to a strong shock impact, its free surface emits aflow of particles of different sizes (shock-wave “dusting”). Traditionally, the process of dusting isinvestigated by the methods of pulsed x-ray or piezoelectric sensor or via an optical technique.The particle size ranges from a few microns to hundreds of microns. The flow is assumedto include also finer particles, which cannot be detected with the existing methods yet. Onthe accelerator complex VEPP-3–VEPP-4 at the BINP there are two experiment stations forresearch on fast processes, including explosion ones. The stations enable measurement of bothpassed radiation (absorption) and small-angle x-ray scattering on synchrotron radiation (SR).Radiation is detected with a precision high-speed detector DIMEX. The detector has an internalmemory of 32 frames, which enables recording of the dynamics of the process (shooting ofmovies) with intervals of 250 ns to 2μs. Flows of nano- and microparticles from free surfaces ofvarious materials (copper and tin) have been examined. Microparticle flows were emitted fromgrooves of 50–200μs in size and joints (gaps) between metal parts. With the soft x-ray spectrumof SR one can explore the dynamics of a single microjet of micron size. The dynamics of densitydistribution along micro jets were determined. Under a shock wave (∼60 GPa) acting on tindisks, flows of microparticles from a smooth surface were recorded.