mOt v6t
_:_-__ r
'.1
i1
'{
l.lf.tivjio ruil
tlo
bu't
r.a
I
-_-
.'t
tJ
'
Hgp
*hicln?r
ugnlrr
lrlu$trg
14
.
i,,:i,'
it,C
i,
tr
'i;1',,'
;'
.,
1i.,,.
,
iirtl:'i
'
Hirh L lr,titr.fttrf
r4hi€il
(
ctu
t.
Nsuy.n
tdc
hoqt'one
cria
hQ
thie't
bitro
ghi
bd:c
xq
(2
tridm).
'y,:r^'lrk':;:'
g
[f-'
litl
CAu
2-
U"-brJdc
tidn
hlnh:thf
nghi$rn
idi
vSt
liQu
he'p thu
Ii ch,i,
tlbng
set'vid
-4h6m{2'iidrn) : '
.'i_3u-3,-:JEi-H !.L-s*,fd-ln-t.:+ng-Eng=i+i-cfe
v4t
liQu c6bd-diy
d, glri
nlr*n
itit'gc
*-
bdng
sd
tigu
sau tlAy:
="
bo
N
d
(mm)
Pb
Cu
AI
5
461:
467
<41
10
310
418
50s
20
240
318
45s
30
1s6
222
,431
40
114
168
391
.ta!-ugsdl&thu
cria
ctri,
ddng'vi
nh6m
vi
cdc gittii
bd diy
mQt
nt?a
tjong
rlng (3x
2didm).
:
N9'u
bie't
No li
sdacm
khi
kh0ng
c6
v$t
IiQu
hf,p
thu,
No=555,
gri
sinh
vi€n
c6 thd
tlC
nghi
mQt
phrrdng
phdp
gi6i
khdc ?
i:
"it
jti
-
-J
\
ir
-
2 I
'l
t
i,.;!l\.
a
1.1
ln n
+f I 1.
:
,'-{
:r,
?
il
i7-
i*
'-
.j
)
. .,
i
.
;
",DE
rHI:
plIUdNG
pHrip
GHr
Do
nUc x4
I{gc
ky
Z
-
Ni0n
khod
2007-2008
''r
''
Y'
-l'
\
.
i
*
.,
: :,
i
,"_
Thdi
gian:
120
phrit
,L
'-:
.'
1
rj.
' c ^
i
rDnh
1 m0 ti
mOt
b6'tri
thi
nghiQm
ha'p
thu
tia gamma
khi truydn
qua
l€:I^'pJL"-
Hinh
2
le
he
thidt
bi
ghi
tlo
brlc
xq
dr)ng
cho
thf
nghi{m
tr€n.
l
,;\
T
\
H$1r
c lfi trgc.
{l+tertd
!t