Dynamics of the detonation products of lead azide. II. Formation of charged particles

1993 ◽  
Vol 73 (5) ◽  
pp. 2138-2144 ◽  
Author(s):  
D. Heflinger ◽  
I. Bar ◽  
T. Ben‐Porat ◽  
G. Erez ◽  
S. Rosenwaks
Keyword(s):  
Charged Particles ◽  
Lead Azide ◽  
Detonation Products

Expansion of the detonation products of lead azide via a supersonic nozzle

Shock Waves ◽  
1994 ◽  
Vol 4 (1) ◽  
pp. 11-14
Author(s):  
Y. Tzuk ◽  
I. Bar ◽  
S. Rosenwaks
Keyword(s):  
Supersonic Nozzle ◽  
Lead Azide ◽  
Detonation Products

Dynamics of the detonation products of lead azide: III. Laser‐induced hole burning and flow visualization

1993 ◽  
Vol 74 (1) ◽  
pp. 45-52 ◽  
Author(s):  
Y. Tzuk ◽  
B. Barmashenko ◽  
I. Bar ◽  
S. Rosenwaks
Keyword(s):  
Flow Visualization ◽  
Lead Azide ◽  
Hole Burning ◽  
Detonation Products

Real time diagnostics of detonation products from lead azide using coherent anti‐Stokes Raman scattering

1991 ◽  
Vol 59 (27) ◽  
pp. 3516-3518 ◽  
Author(s):  
F. Grisch ◽  
M. Péalat ◽  
P. Bouchardy ◽  
J. P. Taran ◽  
I. Bar ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Real Time ◽  
Lead Azide ◽  
Detonation Products ◽  
Anti Stokes

Dynamics of the detonation products of lead azide. I. Hydrodynamics

1992 ◽  
Vol 71 (10) ◽  
pp. 4693-4708 ◽  
Author(s):  
Y. Tzuk ◽  
I. Bar ◽  
T. Ben‐Porat ◽  
S. Rosenwaks
Keyword(s):  
Lead Azide ◽  
Detonation Products

scholarly journals Modelling the influence of gaseous products of explosive detonation on the processes of crack treatment while rock blasting

2021 ◽  
Vol 15 (3) ◽  
pp. 102-107
Author(s):  
Viktoriia Kulynych ◽  
Valerii Chebenko ◽  
Ruslan Puzyr ◽  
Iryna Pieieva
Keyword(s):  
Rock Mass ◽  
Building Materials ◽  
Strength Properties ◽  
Solid Particles ◽  
Lead Azide ◽  
Rock Fragment ◽  
Rock Blasting ◽  
Detonation Products ◽  
Gaseous Products ◽  
Explosive Detonation

Purpose is mathematical modeling of fracturing as well as influence of gaseous products of explosive detonation on the changes in rock strength. Methods. Mathematical model, using foundations of Griffith theory, has been developed. To explain conditions of bridge formation while exploding lead azide charges, a two-stage description of solid particle condensation at a crack surface and inside it has been applied using the smoothed particle hydrodynamics. The analysis, involved electronic microscope, has helped verified the results experimentally. Findings. The effect of rock mass disturbance, resulting from explosive destruction, is manifested maximally right after the action. Subsequently, it decreases owing to the gradual relaxation of the formed defects. Therefore, an urgent problem is to develop ways slowing down strength restore of the blasted rock mass fragments. The process of rock fragment strength restoring may be prevented by microparticles getting into the microcrack cavities together with the detonation products. The research simulates their action. The data correlate to the simulation results confirming potential influence of the blasted rock on the dynamics of changes in the strength characteristics of the rock mass. Various compositions of charges with shells made of inert solid additions have been applied which solid particles can avoid the process of microcrack closure. Originality. For the first time, the possibility of deposition formation within rock micro- and macrocracks has been proposed and supported mathematically. Practical implications. Strength properties of the finished product and the energy consumption during impulse loading as well as subsequent mechanical processing of nonmetallic building materials depend on the strength properties of rock mass fragments. Hence, the ability to control the strength restore has a great practical value. Moreover, it can be implemented during the blasting operations.

Dynamics of the detonation products of lead azide. IV. Laser shadowgraphy of expanding species

1993 ◽  
Vol 74 (9) ◽  
pp. 5360-5365 ◽  
Author(s):  
Y. Tzuk ◽  
I. Bar ◽  
S. Rosenwaks
Keyword(s):  
Lead Azide ◽  
Detonation Products

Feasibility studies of a visible chemical laser from the detonation products of lead azide

1992 ◽  
Author(s):  
I. BAR ◽  
T. BEN-PORAT ◽  
A. COHEN ◽  
D. HEFLINGER ◽  
Y. TZUK ◽  
...  
Keyword(s):  
Feasibility Studies ◽  
Lead Azide ◽  
Detonation Products ◽  
Chemical Laser

The Jovian ring

1984 ◽  
Vol 75 ◽  
pp. 203-209
Author(s):  
Joseph A. Burns
Keyword(s):  
Equatorial Plane ◽  
Charged Particles ◽  
Dynamical Evolution ◽  
Main Band ◽  
Small Grains ◽  
Three Components

ABSTRACTLying in Jupiter's equatorial plane is a diaphanous ring having little substructure within its three components (main band, faint disk, and halo). Micron-sized grains account for much of the visible ring, but particles of centimeter sizes and larger must also be present to absorb charged particles. Since dynamical evolution times and survival life times are quite short (≲102-3yr) for small grains, the Jovian ring is being continually replenished; probably most of the visible ring is generated by micrometeoroids colliding into unseen parent bodies that reside in the main band.

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