rru,2
\ov
on
rnr
so
t
M6n
thi: vaT
r,.f
r-o
pnAlv
trNc
HAT
NHAX
(srl
PHAM)
Thli
gian
lirm
biri:
120
phft
Ngiy
thi:
cAu
I
(1
aD.
Phin
rr?ng
phin
h?ch
h4t nhin
ueng neutron
nhiQt.
cho
mdt
vi du.
c4u 2
Q
d). MQt
nhir
miy
rtiQn
h3t
nhin
c6 c6ng
suAt
300MW".
HiQu
suit nhdr
mriy ttiQn
li
30%.
1.
H6i
s6
phAn
h4ch
xiy ra
trong
mQt
ngiy.
2.
IJ.bi t<triii
tu.mg
"tU
Aiit cnay
t.ot
g
mQt:ngay
Gie sfr mdi
srp kign
phfln
h4ch
t4o ra
ZOOiVI"V.
CAU
3
(3
iI). X6t
ph:in
rring
phffn
h4ch
sau:
/
,
jn
*
"ntru
-
('ilu). -+
'l!cs
+
linu
+
l(jn)+
E
Trong
d6
3 neutron
phan
h4c^h
trfrc
thcri
c6 tdng
tt0n'g
ning
l^
s,2 Mev
vdr
c6c
tia
gamma
trfrc.thcri
c6
t6ng
ning
l*gng
oi
rvr"v.
rir
nnng tliing
vi
ngucri
ta
th6y
sau
3
tAn
phin
r{
beta,-r*cs
tr&
thirnh
ttiing
vi
6cn
tro"a.
vd sau
4 dn
phfln
ri
beta,
ntRb
tr&
thirnh
diing
vi
bAn
"Nn.Ilay
tinh:
1. NIng
luqng
trfrc
thtri giii
ph6ng
ra tir
-srp
kiQn phin
hgch
nAy.
2. Niing
tuqrng
phrflt
ra
th6m
{o
cic chu6i phffn
ri
beta
thf'l
sau
khi
ptrAn
h4ch.
3.
Ning
lugng
phrlt
ra
th6m
do
cric
chu6i
ph6n
ri
beta
thfi.,2
sau
khi
nhin
hach.
)
cho
bi6t :
Kh6i
luqng
cfia
23su,
tn,
to'cs,
,rRb,
tooC.,
,tNb
vi electron
lin
'lugt
li
235,043i24;
,008665;
139,90910;
92,91699,
139,90543,
92,90638vdr0,0005486u.
I
Cr.
,
RL
Cu
Flb
t-
cAU
4
(4
d).
Virng
holt
cria
mQt
td
phin
li'ng
trf,n giim
nhidiu
thanh
kim
loai
uranium
tg
nhi6n
ddri
c6
tlulng
kinh
is,+
^i
sip
xt-ip
trong
tirng
6 vu6ng
c6
cgnh
1-,52
dm
vi
nhring
chim
trong
mQt
thirng
hinh vi6n
trg
chrfra
nu6c
cd
ti
sii chidu
cao
-
ttulng
kinh
l
1,2.
Tir
cric tintr
ctrdt
c,iu
tit
liQu
ngucri
ta
bi6t
dugc
B1,
=
8,6m-2.
Tfnh:
y
.
79
-
r0r
Vgt^)
1.
Tfnh
kfch
thuri,c
cfra
virng
ho?t:
b6n
kfnh R
li
bao
nhi6u
m
vi
chi6u
cao
H Ii
bao nhi6u
m6t
2.
Sii thanh
nhi6n
li_6u
n ldr
bao
nhi6u
thanh.
3. The
tich nhi6n
tiQu
V lir
bao
"fri6r
ilt f.frai.
4.
Kh6i
luqng
nhiGn
ligu
M ti
bao
nhi6u
tdn.
ffi
e#n
-/fu