SLIDE 7
Rate of rise of exposure rate.
The rate at which exposure rate rises to the
peak value has an impact on estimates of whole-body dose.
Rate of rise of
exposure rate at Rongerik Atoll was estimated from monitoring instrument

readings taken for one-half hour (S055).

Rate of rise was determined also

from results supplied by Peterson (Pe81).
Exposure rate contours from graphs
provided by Peterson were evaluated for different times for the Rongerik
location.
A best fit of the data yielded an exponential rise in exposure

rate.

A comparison of the two, measured versus that based on Peterson's work,

indicated wide discrepancy in rate of rise, the measured data being much

steeper.

[
J
|
]
|
T
RISE OF EXPOSURE RATE AT RONGERIK
——-—-— MEASURED ON MARCH 1,1954
———— ESTIMATED BY PETERSON, !98!

‘c (O74

zg

z

&

:

yf
oO

é

e

4

T

-

a

Ww

5
o
a

iW

ty

“”
1075 =

E

r

a

7

r
L

J

= 10-6 —
z

7

Be

-

o

uJ

ow

uJ

x

;
4

i

:

4
2

3

e~

bY

/

/

a

c

ve

+

_-e

C

7

*

-

/

-

oe

SE
oS
U«sé:CC

DIO? e

/

/

»

a

e

“7

/

:

/

=

1

r

10-8
6.8

+

|
6.9

i
7.0

i
7.I

{
7.2

|
7.3

TIME POST DETONATION, HOURS
12

|
7,4

75

Select target paragraph3