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Stuff for Tuesday, May 10, 2011
Schedule this week back to usual:
1094 session on Wednesday, PS#12 due Thursday
Quiz #6 on Friday on Q12–Q15
Unit T starts on Thursday
Binding energy and decay rates:
Binding energy
E
b
≡
E
parts

E
system
,
Δ
m
≡
m
parts

m
sys
=
E
b
/
c
2
nucleus:
Δ
m
=
Z
m
H
+
Nm
n

m
atom
where
m
H
=
1
.
007825 u
m
p
=
1
.
007277 u
m
n
=
1
.
008665 u
m
e
=
0
.
0005486 u
Decays: alpha, beta (neutron
β

, proton
β
+
, EC)
=
⇒
ν
or
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Unformatted text preview: Î½ , gamma A radioactive sampleâ€™s activity is Î» N , which is decays per second 1 becquerel = 1 Bq â‰¡ 1 decay per second; 1 curie = 1 Ci = 3 . 7 Ã— 10 10 Bq dN dt =Î» N = â‡’ Î» â‰ˆ Î” N N Î” t = â‡’ N ( t ) = N eÎ» t where N â‰¡ N ( t = ) halflife t 1 / 2 related to Î» by Î» = ln 2 / t 1 / 2...
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This note was uploaded on 06/03/2011 for the course H 133 taught by Professor Furnstahl during the Spring '11 term at Ohio State.
 Spring '11
 Furnstahl
 Energy, Quantum Physics

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