京都大学放射線生物研究センター

Dosimetry of alpha-particles

(Values are based on the fluence rate and energy distribution of alpha-particles entering into the cells after passing through 1.5 um Myler film. Dose and LET were calculated basing on the elementary composition of ICRU muscle)

FSD*[cm] Mean energy[MeV] Fluence rate[N/sq.cm/sec] Thickness[cm] LET**[keV/um] Dose rate**[cGy/sec]
0 T Average 0 T Average
2 2.8877 42.010E+04 1 131.806 136.262 134.034 8.8712 9.1711 9.0211
3
5
146.805
160.039
139.027
144.868
9.8807
10.7715
9.3572
9.7504
7 175.337 151.520 11.8011 10.1980
10 198.796 162.366 12.9996 10.8717
12 207.951 169.115 12.7073 11.1795
5 2.2307 6.788E+04 1
3
157.190 164.787
181.967
160.989
169.282
1.7094 1.7920
1.9789
1.7507
1.8409
5 198.724 177.731 2.1371 1.9280
7 209.988 185.241 2.1502 1.9863
10 204.211 191.531 1.5729 1.9424
12 186.792 191.556 0.8798 1.8060
7 1.6340 3.476E+04 1 188.143 196.785 192.464 1.0477 1.0958 1.0717
3 208.506 199.168 1.1207 1.0967
5 210.318 202.969 0.9964 1.0774
7 199.580 202.981 0.7005 1.0039
10
12
169.599
148.108
196.800
190.134
0.2078
0.0489
0.8279
0.7126
9 1.0750 2.108E+04 1 217.929 215.824 216.876 0.7361 0.7290 0.7325
3 202.306 210.893 0.5433 0.6656
5 185.618 203.932 0.2924 0.5620
7
10
163.154
130.663
195.162
180.612
0.1023
0.0070
0.4573
0.3396
12 65.763 166.466 0.0002 0.2875

*) FSD: Focal plane-Source distance.
**) Values at entrance (0) and exit (T) of the cell.