Atom fizikasi

Ishning bajarilish tartibi
Gamma-kvantning energiyasini aniqlash uchun uning qo’rg’oshin va alyuminiyda to’la chiziqli yutilish koeffitsienti tajriba yordamida o’lchanadi. Buning uchun gamma-kvantlar intensivligining (sonining) yutgich qalinligiga bog’lanishi aniqlanadi. Ishda quyidagi tajribalar bajariladi.

1. 
   Ishning boshida va oxirida fon -vaqt davomida o’lchanadi va o’rtachasi aniqlanadi. So’ng hisoblanadi.
   
2. 
   Manbadan chiqayotgan gamma-kvantlarning soni yutgichsiz biror -vaqt davomida o’lchanadi. Manbadan vaqt birligi ichida chiqayotgan gamma-kvantlar soni topiladi.
   
3. 
   Qo’rg’oshin va alyuminiy uchun yutgich kalinligininig turli qiymatlaridan o’tgan gamma-kvantlar soni o’lchanadi. Bu yerda o’lchash vaqti.
   

4. 
   Qo’rg’oshin va alyuminiy uchun ning yutgich qalinligi x ga bog’lanish grafigi yarim logarifmik masshtabda chiziladi va
   

tenglamadan kichik kvadratlar usuli yordamida qo’rg’oshin va alyuminiy uchun chiziqli yutilish koeffitsientlarning qiymatlari topilgach, 3-rasmdagi grafikdan foydalanib gamma-kvant energiyasi aniqlanadi.
Sinov savollari

1. 
   Elektromagnit nurlar spektri
   
2. 
   Gamma nurlar va ularning manbalari
   
3. 
   Gamma nurlarning modda bilan ta’sirlashuvi
   
4. 
   Fotoeffekt, kompton effekt va elektron-pozitron jufti
   
5. 
   Yutilish koeffitsentining fizik mazmuni va birligi
   
6. 
   Yarim yutilish qatlami
   
7. 
   Yutilish koeffitsentining gamma-kvant energiyasiga bog’lanish grafigi
   

X U L O S A

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