This preview shows page 1. Sign up to view the full content.
45. Since the spreading is assumed uniform, the count rate
R
=74
,
000
/
sisgivenby
R
=
λN
=
λ
(
M/m
)(
a/A
),
where
M
= 400 g,
m
is the mass of the
90
Sr nucleus,
A
= 2000 km
2
,and
a
is the area in question. We
solve for
a
:
a
=
A
³
m
M
´
µ
R
λ
¶
=
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics, Mass

Click to edit the document details