| SUBJECT |
CLASS |
REMARKS |
|---|
| a. Yields |
|
|
|
1) Developmental and test weapons
or devices are classified except as follows: |
|
|
|
|
a) Sandstone, Trinity, Hiroshima,
Nagasaki, Crossroads, and Ivy Mike |
U |
The number 1 or nearest whole number multiple
of 10 or 100, i.e. 1Kt, 10Kt, 20Kt, etc., 100Kt, 200Kt, 300Kt, etc. |
|
2) Hypothetical yields |
U |
A hypothetical yield is any yield not identifiable
with an actual detonation, weapon or device. (See 4a for limitation and exceptions.) |
| b. Thermal Phenomena |
|
|
|
1) Mathematical expressions of graphical
presentations resulting from a compilation of thermal data as a function of hypothetical yield. |
U |
|
|
|
a) Shape of radiate pulse |
|
|
|
|
b) Thermal yield |
U |
|
|
2) Incidental thermal radiation
energy at a given distance for a hypothetical yield |
U |
|
|
3) Existence of, and circuitry
used in devices such as bhangmeters |
U |
|
| c. Fireball characteristics |
|
|
|
1) Mathematical expression or graphical
presentations resulting from a compilation of fireball data as a function of
hypothetical yield |
U |
|
|
|
a) Maximum fireball radius |
|
|
|
|
b) Radius of fireball related to time for scaled time |
U |
|
| d. Bomb clouds and columns |
|
|
1) Cloud chamber effects |
U |
Except when related to yields |
|
2) Base surge |
U |
|
|
a) Gamma intensity vs. time (after 0.01 seconds from
detonation), integrated dose and effective energy spectrum |
U |
|
|
b) Neutron total dose (rad or rem) |
U |
It is permissible to indicate "high," "medium,"
or "low" neutron yield detonation. |
|
|
c) Neutron dose as a function of energy spectrum
as measured by activation, threshold and fission detectors having
thresholds 3 Mev or below. |
U |
Unclassified for unboosted fission weapons only. |
|
|
d) Neutron induced activity as determined by type or
composition of exposed material. |
U |
|
|
e) Character and degree of attenuation,
scattering or absorption in various media |
U |
"Clean" and "salted" weapons or devices will not be included. |
| f. Radioactive Fall-out |
|
|
1) Mathematical expressions or graphical
presentations resulting from a compilation of radioactive fall-out
or residual radiation data as a function of hypothetical yield and
burst conditions |
U |
|
|
a) Pattern |
|
|
b) Iso-intensity and iso-dose contours, total activity, residual radiation
energy spectrum, or decay rate |
U |
|
|
|
(1) For fission weapons, devices or detonations. |
|
|
|
c) Beta to gamma ratio |
U |
|
| g. Blast and Shock Phenomena |
|
|
|
1) Mathematical expressions or graphical presentations resulting
from a compilation of blast and shock data as a
function of distance and hypothetical yield. |
|
Provided height of burst or depth of burst is not specified. |
|
|
a) Peak overpressure |
U |
|
|
b) Peak dynamic pressure |
U |
|
|
c) Time of arrival of shock front |
U |
|
|
d) Positive phase duration of overpressure
and dynamic pressure |
U |
|
|
e) Peak density or peak material velocity |
U |
|
|
f) Mach characteristics and height of triple point |
U |
|
|
g) Overpressure and dynamic pressure impulse |
U |
|
|
h) Crater dimensions for surface bursts |
U |
|
|
I) Variation of crater dimensions with depth of
burst as obtained from unclassified TNT data |
U |
|
2) Partition of energy |
|
|
|
a) In air, below 15,000 feet MSL |
U |
As among thermal, visible, nuclear radiation, and shock |
|
3) Precursor and related phenomena |
|
|
|
a) The word "precursor" when used in connection
with atomic weapons phenomena or effects |
U |
