Page 97 - Handout Digital Fisika Inti Yurindah Lestari
P. 97
BAB 4 REAKSI INTI NULIR
1 ⃗⃗⃗⃗⃗⃗⃗⃗ ⃗⃗⃗⃗⃗⃗⃗⃗
2
2
′ = ( ′ + ′ )
2
1 2 ⃗⃗⃗⃗⃗ 2
2
′ = {( ( ) . ) + ( )(− ⃗⃗⃗⃗⃗ ′
) }
2 +
2
1 2 ⃗⃗⃗⃗⃗ ⃗⃗⃗⃗⃗⃗⃗⃗
2
2
′ = { ( ) + ( ) ( ′ )}
2 + 2
1 2 2 2
⃗⃗⃗⃗⃗
⃗⃗⃗⃗⃗
2
2
′ = { ( ) + ( ( ) )}
2 + +
1 ⃗⃗⃗⃗⃗
2
′ = { ( )}
2 +
Sehingga dapat dituliskan:
′ = ( )
+
Keterangan:
′
= energi kinetik dikerangka lab = |− |
′
= energi kinetik dikerangka pusat
= massa inti sasaran
= massa proyektil
Tenaga kinetik ambang di kerangka lab
′ = ( )
+
+
′
= ( )
(4-5)
= |− | ( + )
Di kerangka lab sasaran X diam TX = 0
1 ⃗⃗⃗⃗⃗ +
2
= |− | ( )
2
+
1 ( )
=
|− | 1 2
⃗⃗⃗⃗⃗
2
92
