Fysgen1

Page 1

'

1

1. . . . .

.

8

3路10 m/s . .

2. . . . .

5 ,

,

.

, .

.

.

5

3.

, 1=-13,6

. . . .

eV.

20 eV .

:

.

. .

5

4. . . . .

, .

:

. .

. 5

5.

,

: 1 1

H+X

n+

235 92

U

4 2

He + e + +

X+

92 36

e

Kr + 3n

5 .

1


2 1.

. –

ln 2 t0

=

.

10 2.

, ,

( ) ,0=2

,0

, ,

( ), ,0

( )

.

( )

.

.

8 3.

n1

,

, :

c= (n1-n2)c0/n1¡n2

n2,

7

3

( 21 H )

. 2 1

H+ H 2 1

3 1

H+ H 1 1

.

2


) 200g

2 1

H,

mol

2 1

2g

H

. 9

)

2 1

H

, 20 W,

;

40%; )

2 1 3 1

0,56·10

H

H. 2

8

23

: 1MeV=1,6·10 J, 1u=900MeV/c , NA=6·10 m( 11 H )=1,008u, m( 21 H )=2,009u, m( 31 H )=3,009u. 4

/mol

1

,

n2

2=7,25

n2

eVolt.

2

n3=2

1.

J,

-13

-13

e n3=2

8

0,4·10 J

H 1 1

-

-13

2

t=26 10-10 s. )

2

)

d=19,5 10-2 m,

n, .

1,

: 7

n2.

)

6 –

1

)

.

6

. : h=6,63 10

-34

8

J s, c0=3 10 m/s,

1=-13,6

eV

1 eV =1,6 10

-19

6

J.

.

3


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