1-laboratoriya ishi beta-nurlanish uchun radioktiv nurlanish qonunini tekshirish tajriba maqsadi

1-laboratoriya ishi

BETA-NURLANISH UCHUN RADIOKTIV NURLANISH QONUNINI TEKSHIRISH

Tajriba maqsadi:

1. Radiaktiv modda. Kimyoviy elеmеnt. Radiaktiv izotop haqida tushincha bеrish.
2. Yadro nurlari va ularni qayd etish mеtodlarini o‘rganish.
3. Yadro nurlarini qayd etishda qo‘llaniladigan asbob uskunalarni o‘rganish.
4. Bеrilgan radiaktiv kimyoviy elеmеntning aktivligini aniqlash.

Kerakli asboblar ro’yxati:
1. Radioaktiv manbalar to`plami………………………3559835
2. Sanagich trubkasi kabeli bilan………………………559 01
3. Sanagich……………………………………………..575 471
4. Prujinali kichik kontakt qisgich……………………..590 02
5. Katta prujinali shtift…………………………………591 21
6. Ulash shatunlari……………………………………...532 16
7. Ulash uyasi…………………………………………..300 11
8. Metall lineyka 0,5 m…………………………………460 97
Qurilma haqida:
Qurilma Sr-90 radioaktiv preparat, metal lineyka, sanagich va manba, sanagichni o‘rnatish uchun shtativlardan iborat





Tajriba qurilmasining umumiy ko‘rinishi
Ishni bajarish tartibi:
1. Labartorya qurulmasi bilan tanishilib ishga tayyorlash.
2. Nurlanish bo‘lmaganda sanash tezligi o‘lchanadi. 100 sekund oraliq bilan 5 marta.
3. O‘lchash vaqtida belgilash uchun ,, GATE‘‘ tugmasidan foydalaning.
4. Nol masofada sanagish va manba bir chiziq qilib qo‘yiladi.
5. 3 marta 10 sekunt natija oling.
6. Masofani o‘zgartirib tajribani takrorlang.
7. 1,2,3 sm uzoqliklar uchun vaqt intervali 10 s. 5,7,10,15 va 20 sm uzoqliklar uchun vaqt intervali 60 s. 30 sm uzoqlik uchun vaqt intervali 100 s.
8. Aktivlikni masofaga bog‘lanish grafigi chizilsin

r (sm)	t, (s)	N1	N2	N3	No’rt	A (s^-1)
0	10	5372	5315	5351	5346	534.19
1	10	1942	1985	1964	1963.67	195.96
2	10	1131	1181	1179	1163.67	115.96
3	10	616	619	632	622.33	61.823
5	10	227	232	223	227.33	22.323
7	60	760	741	705	735.33	11.85
10	60	308	335	367	336.67	5.2
15	60	176	152	182	170	2.423
20	60	82	100	108	96.67	1.201
30	100	98	115	98	103.67	0

XULOSA
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________