:
1. (AB) = pa, pa - ...
- (AB) O, (AB) :
.
- O pa ... .
- A . (AC) b .., - .., - b ....
- (CD) (AB), :
,
, . , |
(. (2.28))
.
23. a= 5 1 . TB B 1, b = 300.
Ta = Tb + TB,
Ta, Tb, TB - , ...
(2.30)
,
.
,
.
24. t(d,n) . Tn, 900 , , d = 0.2 .
:
Q = 13.136 + 14.950 - 2.424 - 8.071 = 17.591 .
(2.30)
.
25. 7Li(p,n)7Be. Tp = 5 . Tn = 1.75 . n ? T, 1 , 10 .
Q = 14.907 + 7.289 - 8.071 - 15.768 = -1.643
(2.31),
,
(2.30),
26. lt, 27Al(,t)28Si, - = 0.
+ 27Al | = t | + 28Si | |
JP: 0+ | 5/2+ | 1/2+ | 0+ |
:
3, 2.
;
,
:
lt , .. lt = 2.
27. p + 7Li 8Be* + ?
p | +7Li | 8Be* | + | |
JP: 1/2+ | 3/2- | 0+ | 0+ |
( -) , .. . , - . Jf = , . , 8Be , - .
|
|
, (lp= 1,3,...).
28. lp 12C(,p)11B, : 1) , 2- ; 2) 1/2+, 1- ; 3) , 1- ?
JP(12C) = 0+.
1) JP(11B) = 3/2-.
. c:
:
.
, lp 0,1,2,3,4.
, lp , .. lp =1,3.
2) JP(11B) = 1/2+.
lp 0, 1, 2. lp =0, 2.
3) JP(11B) = 3/2-.
0, 1, 2 lp =0, 2.
30. 4 - ln = 2. -, .
8Be(p, )7Li.
1, 2, 3, .. 1, 2 3-.
31. 8 -, l = 1. -, ?
, ld= 0,1,2. , .. ld = 1.
33. 40C 1 -. ?
- 0+. , , . . 1 , 1-. , , . - 1p1h.
,
- . : 1d3/2 2p3/2, 1d3/2 1f5/2, 1d3/2 2p1/2, 2s1/2 2p3/2, 2s1/2 2p1/2, 1d5/2 1f7/2, 1d5/2 2p3/2, 1d5/2 1f5/2. , . 1- - . , 1s1/2 2p3/2 1s1/2 2p1/2. |
|
|
34. 12C 1 -. ?
12C 0+, 1p3/2 , 1 , - 1, , . 1s1/2 2p3/2, 1p3/2 1d5/2, 1p3/2 2s1/2, 1p3/2 1d3/2.
36. - 3 238U 1500 1700.
(3.6):
,
T - , z Z - . - 1 - 2:
2 = 7.86 .
37. d = 0.1 - N0 = 103 /c. - T = 5 . - , = 1700? = 19.3 /3.
(3.2) (3.3):
(3.2)
. (3.3)
, (3.6):
. (3.6)
(3.2), (3.3) (3.6) -, 1 :
0.77 /( ).
38. - T = 10 = 1 /2. , = 30, S = 12, l = 20 . - ?
37
,
; =S/4l2.
, =30 0:
39. 27Al(p,d)26Al Tp = 62 , d = 90 d = 210-4 , Td = 45,3; 44,32; 40.91 . q = 2.19 , = 5 /2, N 5180, 1100 4570 . 26Al, . d /d .
b(i)=Q0-Qi,
Q0, Qi - .
27Al (p, d)26Al 26Al ,
Q0 = -17.197 + 7.289 -13.136 + 12.210 = -10.834 .
, (2.31):
.
Q1 = -10.83 , Q2 = -11.87 Q3 = - 15.56 .
26Al (Q1 = Q0), 1.05 , 4.72
:
40. 32S(,p)31P 31P -, 18 , 4 . 31P(p, )32S, 32S, 32S(,p)31P. , - .
|
|
(3.8):
, .
E Tp
,
Q = 26.016 + 24.441 7.289 = 8.864 ,
Tp = 18-8.864 = 9.136 .
: , . - :
.
41. J, 55Mn d=0.1 t = 15 , t = 150 I 2100 . 56Mn 2.58 , = 0.48 , = 7.42 /3.
,
n -
.
1.62107 ./
42. d /d 900 10 /. , 1+2sin.
a a(1 + 2sin900) = 10. a = 10/3 /.
108 .
43. (Tn 1 ) . ?
238U