Language: &ngiisn
Journal Announcement:

EDB8611

Availability: NTIS, PC A02/MF AOQ1.

Subfile:
BRA (Energy Research Abstracts).
GRA (NTIS NTS)
Country of Origin: United States
Country of Publication: United States
Abstract: 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.

Major Descriptors: *HARDTACK PROJECT; *NUCLEAR EXPLOSIONS -- NUCLEAR
FIREBALLS; *NUCLEAR FIREBALLS -- ABSORPTION SPECTRA; *NUCLEAR FIREBALLS
-- EMISSION SPECTRA
Descriptors: AIRCRAFT; ATMOSPHERIC EXPLOSIONS; BOMBS; MOLECULES;
PHOTOGRAPHY; RESOLUTION
Broader Terms: EXPLOSIONS; FIREBALLS; NUCLEAR EXPLOSIONS; SPECTRA; WEAPONS

Subject Categories:
Weaponry

10/5/510
01877594

Author(s):
Baker,

-*

450202*

(Item 210 from file: 103)
BRA-12-005121; EDB-87-005227

Brubaker,
D.J.

R.M.;

Gauvin,

Title: Operation Hardtack.
high-altitude bursts

Corporate Source:

Publication Date:

Report Number(s):

Document

-- Explosions & Explosives -~ Nuclear --

(-1989).

Type:

H.P.;

Project 8.2.

Air Force Geophysics

1 Sep 1985

p 68

A.T.;

Cahill,

J.P.;

Thermal radiation from
Lab.,

Hanscom AFB,

MA

(USA)

AD-A-995390/2/XAB

Report

Language: English
Journal Announcement:

EDB8611

Availability: NTIS, PC A04/MF AO0Ql.
Subfile:

Stair,

BRA

(Energy Research Abstracts).

Country of Origin: United States
Country of Publication: United States

GRA

(NTIS NTS)

Abstract: The objective of this project was to improve the basic

understanding of the physics of high-altitude nuclear detonations by
measuring the thermal radiation from the high-altitude Shots Yucca,
Orange, and Teak. Spectral irradiances obtained by distant airborne
instrumentation are presented as a function of time in four wavelength
bands. The measurements are extrapolated to an assumed point source,
and these generalized results are discussed. Simple scaling laws are
not sufficient to predict the thermal radiation from a high-altitude
nuclear detonation. In particular, the power radiated in the infrared
exceeds by a large factor that expected from a black body of dimensions
comparable with the visible fireball. This implies the existence of
some mechanism that is producing a greater proportion of infrared
radiation than would be obtained using the equilibrium blackbody
theory.

Major Descriptors: *BLACKBODY RADIATION; *HARDTACK PROJECT; *INFRARED
RADIATION; *NUCLEAR EXPLOSIONS -- THERMAL RADIATION; *THERMAL RADIATION
-- SPECTRA
|
Descriptors: ATMOSPHERIC EXPLOSIONS; NUCLEAR FIREBALLS; PHYSICS; TIME
DEPENDENCE
Broader Terms: ELECTROMAGNETIC RADIATION; EXPLOSIONS; FIREBALLS; NUCLEAR
EXPLOSIONS; RADIATIONS
Subject Categories:

Weaponry --

10/5/5i1

01877593
Author(s):

450202*

(-1989)

-- Explosions & Explosives -- Nuclear --

{Item 211 from file: 103)

BRA-12-005120;
Derksen, W.L.;

Koehety a1 q 2

EDB-87-005226
Carter, J.A.;

Hirschman,

A.;

de Lhery,

G.P.;

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