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Spatio-temporal dynamics behind the shock front from compacted metal nanopowders
- Source :
- Optics express. 22
- Publication Year :
- 2014
-
Abstract
- Laser ablated shock waves from compacted metal nanoenergetic powders of Aluminum (Al), Nickel coated Aluminum (Ni-Al) was characterized using shadowgraphy technique and compared with that from Boron Potassium Nitrate (BKN), Ammonium Perchlorate (AP) and Potassium Bromide (KBr) powders. Ablation is created by focused second harmonic (532 nm, 7 ns) of Nd:YAG laser. Time resolved shadowgraphs of propagating shock front and contact front revealed dynamics and the precise time of energy release of materials under extreme ablative pressures. Among the different compacted materials studied, Al nanopowders have maximum shock velocity and pressure behind the shock front compared to others.
- Subjects :
- Shock wave
Materials science
business.industry
Potassium bromide
digestive, oral, and skin physiology
chemistry.chemical_element
Shadowgraphy
Ammonium perchlorate
Laser
Atomic and Molecular Physics, and Optics
law.invention
Shock (mechanics)
chemistry.chemical_compound
Optics
chemistry
Aluminium
law
Composite material
business
Boron
Subjects
Details
- ISSN :
- 10944087
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Optics express
- Accession number :
- edsair.doi.dedup.....85702425adcdb5a96968c0fdfdb1b082