i
6).
The higher the yleld, the larger is this percentage.
treataent of the hydredynanie offuct follows.
A simplified
\
Assuming a sphere of volume V,, radius R, end filled with a gas of
density pp and mass M, then
4:R!
= Vepy = aah
(1.4)
Let the gas be coxpressed into a shell with thickness AR (R renain-
ing constant).
The new gags volume {9 expressed as VY with a density of
po (Wy = 4r R? AA).
The mass has not changed; thus
.
.
M = Vong = 47R® ARG,
4nR3p
2
.
—=
=
(AR << R)
47R
.
.
ARP,
(1.5)
.R
ARp, + “Ee
!
(1.6)
Equation 1.6 indicates that a ray originating in the center of the
sphere would traverse only a third as much of the mass in the shell model
.
:
TABLE 2.2 CALCILATZD BIILO-UP FACTORS
i
Tis bulldevp Castor (2) given tore is the factor By (4,D, By}
j
as competed by the iciaar Davelomsat Assoclatae for AFSWP
(faferencea 5).
Energy i2,)
Bulld-up Peator, B
A,C00 yarda
1,570 yaote
34000 yards
tov
i
3
4
190
16.2
3.85
2.97
1.0
43
5.93
4.0
2.02
~8$
19.2
7.09
2.99
es it vould in the homovencous mid2l. Tho result vould ta en enhrotement
of rediation. Once the «shi
hoof wh tardal n tho shock front passes the
datector, an oven-greatersSomh onee ont eh uld recult.
As proviously stated, the Bh (ayy) ccoccoaent of dndtdel redtation ds
eseantially omitted within 0.2 cocond. Cinca Lt tekas at Lesct ono s2er
ond for the shock front to reach a Gateetor et a distesss of 7,000 fcat
{oven for deviers in tha order of Gr), tu id (nv) corseonent 43 not
si,cnificaniiy etharsed. Tha fl: iadon-pacdueet Eormas con baer to contribute
during tha Strst 39 sccords; thovafore, this raltintion la stver ly eahunced
by the shock wave.
43
fm ete cee rete mm em tt ee mem ae care mmmie
wee
SECRET
me reo meee