Lab Report #12

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counting radiation

Interval Time (s) Counts
1 5 504
2 10 518
3 15 529
4 20 546
5 25 511
6 30 496
7 35 506
8 40 480
9 45 530
10 50 521
11 55 512
12 60 547
13 65 614
14 70 557
15 75 554
16 80 541
17 85 589
18 90 505

Part 3. The invers square law. 2013

shielding

source shielding average counts per 5 seconds
beta none 446.8
beta 1 sheet paper 441.0
beta 3 sheets paper 404.6
beta 1 sheet plastic 190.5
beta 2 sheets plastic 67.9
beta 3 sheets plastic 17.8
beta 1 sheet lead 5.4
beta 2 sheets lead 4.8
beta 3 sheets lead 4.1
gamma none 266.3
gamma 1 sheet paper 263.3
gamma 3 sheets paper 246.9
gamma 1 sheet plastic 244.8
gamma 2 sheets plastic 231.4
gamma 3 sheets plastic 226.5
gamma 1 sheet lead 219.3
gamma 2 sheets lead 192.3
gamma 3 sheets lead 176.2

Lab# 42 Radiactivity Part 1 and 2 8/2013

radioactive decay

time (min) activity
0.08 902
0.17 912
0.25 917
0.33 835
0.42 845
0.50 836
0.58 796
0.67 793
0.75 862
0.83 755
0.92 795
1.00 750
1.08 743
1.17 706
1.25 713
1.33 652
1.42 680
1.50 599
1.58 614
1.67 587
1.75 578
1.83 590
1.92 599
2.00 546
2.08 546
2.17 525
2.25 506
2.33 541
2.42 513
2.50 486
2.58 493
2.67 484
2.75 458
2.83 417
2.92 521
3.00 411
3.08 447
3.17 379
3.25 402
3.33 381
3.42 344
3.50 361
3.58 370
3.67 329
3.75 320
3.83 307
3.92 321
4.00 371
4.08 289
4.17 299
4.25 277
4.33 305
4.42 296
4.50 246
4.58 304
4.67 289
4.75 307
4.83 250
4.92 254
5.00 275
5.08 250
5.17 238
5.25 218
5.33 215
5.42 210
5.50 193
5.58 249
5.67 238
5.75 214
5.83 210
5.92 210
6.00 183
6.08 170
6.17 161
6.25 144
6.33 186
6.42 186
6.50 134
6.58 159
6.67 170
6.75 164
6.83 154
6.92 156
7.00 138
7.08 129
7.17 106
7.25 165
7.33 160
7.42 124
7.50 94
7.58 134
7.67 126
7.75 138
7.83 126
7.92 128
8.00 82
8.08 154
8.17 94
8.25 102
8.33 116
8.42 92
8.50 114
8.58 72
8.67 88
8.75 88
8.83 84
8.92 70
9.00 111
9.08 72
9.17 76
9.25 58
9.33 106
9.42 104
9.50 68
9.58 78
9.67 72
9.75 110
9.83 87
9.92 71
10.00 96
10.08 56
10.17 60
10.25 54
10.33 60
10.42 66
10.50 64
10.58 74
10.67 46
10.75 54
10.83 55
10.92 62
11.00 74
11.08 44
11.17 54
11.25 48
11.33 51
11.42 54
11.50 50
11.58 46
11.67 38
11.75 30
11.83 50
11.92 32
12.00 48

Lab# 42 Radiactivity 7/2013