Curie-Minute Chart for Iridium-192

Exposure Time Chart in Curie - Minutes for IRIDIUM - 192 for Agfa D7 Film SFD IN→ THK mm↓

3”

4”

5”

6”

7”

8”

9”

10”

12”

14”

16”

18”

20”

24”

30”

36”

42”

EXPOSURE TIME = F.F X 2^N X S.F.D^2 X 60 / 0.55 X 40^2 X CI STRENGTH, WHERE FF= FILM FACTOR,N=THICK/HVT,0.55=RHM FACTOR FOR IRIDIUM-192

6.35

1.68

2.98

4.66

6.71

9.13

11.93

15.09

18.64

29.30

36.53

47.71

60.38

74.54

107.34

167.72

241.51

328.73

9.53

1.98

3.52

5.49

7.91

10.77

14.07

17.80

21.98

33.63

43.08

56.27

71.21

87.92

126.60

197.82

284.85

387.72

12.70

2.11

3.75

5.86

8.43

11.48

14.99

18.98

23.43

33.74

45.92

59.98

75.91

93.71

134.95

210.86

303.63

413.28

15.88

2.29

4.07

6.35

9.15

12.45

16.27

20.59

25.42

36.60

49.82

65.07

82.35

101.67

146.41

228.76

329.42

448.37

19.05

2.51

4.47

6.98

10.05

13.68

17.87

22.62

27.92

40.21

54.73

71.49

90.47

111.70

160.84

251.32

361.89

492.58

22.23

2.84

5.05

7.89

11.36

15.46

20.20

25.56

31.56

45.44

61.85

80.78

102.24

126.22

181.76

284.00

408.96

556.64

25.40

3.32

5.91

9.23

13.29

18.09

23.63

29.91

36.93

53.17

72.38

94.53

119.64

147.71

212.70

332.34

478.57

651.39

28.58

3.89

6.91

10.80

15.56

21.17

27.66

35.00

43.21

62.23

84.70

110.62

140.01

172.85

248.91

388.92

560.04

762.27

31.75

4.55

8.09

12.64

18.20

24.78

32.36

40.96

50.57

72.82

99.11

129.46

163.84

202.28

291.28

455.12

655.37

892.03

34.93

5.33

9.47

14.79

21.30

29.00

37.87

47.93

59.18

85.21

115.99

151.49

191.73

236.71

340.86

532.59

766.93

1043.88

38.10

6.23

11.08

17.31

24.93

33.93

44.32

56.09

69.25

99.72

135.73

177.28

224.37

277.00

398.88

623.25

897.48

1221.57

41.28

7.29

12.97

20.26

29.17

39.71

51.86

65.64

81.04

116.70

158.84

207.46

262.56

324.15

466.78

729.34

1050.26

1429.52

44.45

8.53

15.17

23.71

34.14

46.47

60.69

76.81

94.83

136.56

185.87

242.77

307.26

379.33

546.24

853.50

1229.04

1672.85

47.63

9.99

17.76

27.74

39.95

54.38

71.02

89.89

110.98

159.81

217.51

284.10

359.56

443.90

639.22

998.78

1438.25

1957.62

50.80

11.69

20.78

32.47

46.75

63.63

83.11

105.19

129.87

187.01

254.54

332.46

420.77

519.47

748.03

1168.80

1683.07

2290.85

53.98

13.68

24.32

37.99

54.71

74.47

97.26

123.10

151.97

218.84

297.87

389.05

492.39

607.89

875.37

1367.76

1969.57

2680.81

57.15

16.01

28.45

44.46

64.02

87.14

113.82

144.05

177.84

256.09

348.57

455.28

576.21

711.37

1024.38

1600.59

2304.85

3137.15