Initiation of Energetic Solids: The First Nanosecond
Abstract
The goal is to understand what occurs at the molecular level during shock initiation of energetic materials. We have developed the nanoshock technique, which lets us shock any solid material and study its molecules using ultrafast vibrational spectroscopy with 25 ps time resolution. Test experiments were conducted with anthracene to verify the performance of this technique, which was subsequently extended to energetic materials including RDX and NTO. A related theoretical effort looked at orientation effects in initiation. A related project is understanding the role of molecular vibrational energy transfer processes in initiation. Since we know little about energy transfer, we are concentrating on simple model systems under non shock conditions. We have used a new experimental apparatus which uses a infrared-Raman technique with 1 ps resolution to study nitromethane and other simpler liquids. A minor effort relates to technology transfer from our ARO-funded shock wave program to industry. in particular we have used ultrafast microscopy and shock wave generation techniques to improve laser photothermal imaging processes used in graphic arts by incorporating energetic materials into the imaging media.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1999
- Accession Number
- ADA365126
Entities
People
- Dana D. Dlott
Organizations
- University of Illinois Urbana–Champaign