6. : p, n, , 0, 0, -.
U | u | d | p | |
+2/3 | +2/3 | -1/3 | ||
U | d | d | n | |
+2/3 | -1/3 | -1/3 | ||
U | d | s | ||
+2/3 | -1/3 | -1/3 | ||
-1 | -1 |
U | d | s | 0 | |
+2/3 | -1/3 | -1/3 | ||
-1 | -1 |
U | s | s | 0 | |
+2/3 | -1/3 | -1/3 | ||
-1 | -1 | -2 |
S | s | s | - | |
-1/3 | -1/3 | -1/3 | ||
-1 | -1 | -1 | -2 |
7. , .
4He ( (4He) = , JP(4He) = 0+) - 1s1/2. JP() = 1/2+, - () = .
, () = (4He) + () = + = ,
() = (4He) + () = + =
P() = P(4He) P() = (+1) (+1) = +1.
: JP() = 1/2+, I() = 0.
4He, - 1s1/2. 1s1/2, , ,
JP( ) = 0+.
, () = (4He) + () + () = + + = ,
() = (4He) + () = + =
P() = P(4He) P() = (+1) (+1) = +1.
JP = 0+, I () = 0.
8. p-p, n-n, p-n.
p-p: | n-n: |
p-n: | |
9. , "", ,
++, -, - .
++ - (uuu), - - (ddd), - - (sss). JP = 3/2+. . . s = 1/2 s = - 1/2. , , 3/2+, , , . ( ). , - "". "" , . "" - , , .
10. , : 1) 2) 3)
1) | |||
Q: | - 1 + 1 0 + 0 | Q = 0 | |
B: | 0 + 1 1 + 0 | B = 0 | |
S: | 0 + 0 - 1 + 1 | S = 0 | |
I3: | - 1 + 1/2 0 - 1/2 | I3 = 0 |
.
|
|
2) | |||
Q: | 1 - 1 1 - 1 | Q = 0 | |
B: | 1 - 1 - 1 + 1 | B = 0 | |
S: | 0 + 0 3 - 3 | S = 0 | |
I3: | 1/2 - 1/2 0 + 0 | I3 = 0 |
.
3) | |||
Q: | 1 + 0 - 1 + 1 + 1 | Q = 0 | |
B: | 0 + 1 1 + 0 + 0 | B = 0 | |
S: | 0 + 0 - 2 + 1 + 1 | S = 0 | |
I3: | 1 - 1/2 - 1/2 + 1/2 + 1/2 | I3 = 0 |
.
11. : 1) ; 2) ; 3) - ; 4) ; 5) - . ?
1) . - .
2) . - .
3) - . - .
4) . - .
5) - . - .
12. - - .
N N .
, -
,
13. , ?
1) ; 2) ; 3) .
.
:
| S| = 1 Q = S, Q S - .
Q S :
1) | |||
Q: | 0 - 1 | Q = - 1 | |
S: | 1 0 | S = - 1 |
Q = S.
2) | |||
Q: | - 1 0 | Q = 1 | |
S: | - 1 0 | S = 1 |
Q = S.
3) | |||
Q: | 0 - 1 | Q = - 1 | |
S: | - 2 - 1 | S = 1 |
Q S.
14.
1) , 2) , 3) , 4) . ?
1) |
.
2) |
.
3) |
.
2) 3) 0- = +1 0- = - 1. - = -1, 0- - - . 0 - - = = -1.
4) |
.
15. K + - ? , .
|
|
1) ; | 3) ; |
2) ; | 4) ; |
Q, S I3 Le:
1) | |||
Q: | 1 1 | Q = 0 | |
S: | 1 0 | S = -1 | |
I3: | ½ 1 | I3 = 1/2 | |
Le: | 0 0 - 1 + 1 | Le = 0 |
, S = -1,
Q = 0, Q S.
2) | |||
Q: | 1 0 | Q = -1 | |
S: | 1 0 | S = -1 | |
I3: | ½ 0 | I3 = -1/2 | |
Le: | 0 -1 + 1 | Le = 0 |
- . . :