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OPERATION HARDTACK. Project 8.4. Early-Time Spectra of Very-High- Altitude Nuclear Detonations
NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA
The objective of this project was to photograph the spectrum of the bomb light of the three high altitude nuclear detonations of Operation Hardtack from two high-flying aircraft with a time resolution of 50 seconds and a spectral resolution adequate to identify the emission or absorption spectrum of molecular species that might be formed around the fireball. Keywords Instrumentation Photography Nuclear Fireball.
Extracted version of report dated 6 Jun 1960.
Approved for public release; distribution is unlimited.