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Table 1 Radiation profile
a
— Aluminum probe head
b
a. Table revision D, January 2013.
b. Aluminum probe head only, no probe shield in place.
Model: DELTA Series
Date: Oct. 2012 and Jan. 2013
Survey instrument
Ludlum Model 3
44-7 probe
Ludlum Model 2241
44-172 probe
Performed by:
F. Cook
R. Nasella
Validated by: M. L. Tremblay
Probe head: Aluminum
Measured dose rate in µSv/h
c
— Secondary radiation (scatter)
c. To convert measurements to mR/h, divide results by 10.
Mode(s)
Substrate
Voltage
(kV)
Amperage
(µA)
Filter
Trigger — T
Close — F
5 cm — F1
10 cm—F2
30 cm
(calculated)
Alloy Plus, Mining,
Mining Plus,
GeoChem 1, 3-Beam
Soil 2, HalFree 1, RoHS 1
(plastic)
316 stainless
40
100
Aluminum
BK
d
d. BK = Background reading (< 1
μ
Sv/h).
7
6
BK
BK
Al (319 AA)
7
300
120
30
4
EC 680K
45
900
500
320
19
Soil (SiO
2
)
20
400
250
70
9
RoHS 1, 4-Beam RoHS 1
(plastic), RoHS 2,
4-Beam RoHS 2 (alloy)
PVC-Blank
50
e
e. All 50 kV readings are taken with standard probe shield in place.
80
Copper
10
840
400
250
15
EC 680K
16
1800
800
500
30
71X SR2 (solder)
BK
5
1
BK
BK
Alloy, Mining
316 stainless
35
100
Aluminum
BK
2
2
BK
BK
Soil (SiO
2
)
5
130
60
20
Alloy Plus 3
316 stainless
8
200
Open
BK
BK
BK
BK
BK
Al (319 AA)
BK
BK
BK
BK
BK
Alloy Plus 2
316 stainless
13
200
Open
BK
BK
BK
BK
BK
Al (319 AA)
BK
BK
BK
BK
BK
Alloy 2
316 stainless
15
200
Iron
BK
BK
BK
BK
BK
Al (319 AA)
BK
BK
BK
BK
BK
3-Beam Soil 1, Mining
Plus
Soil (SiO
2
)
50
e
80
Copper
25
1500
800
450
30
3-Beam Soil 1
Soil (SiO
2
)
40
100
Copper
10
400
220
70
8
RoHS 2 (alloy)
PVC-Blank
40
100
Copper
5
200
90
30
3
EC 680K
4
700
420
300
16
Geochem 2, Mining
Plus 2
Soil (SiO
2
)
10
200
Open
BK
BK
BK
BK
BK
3-Beam Soil 3
Soil (SiO
2
)
15
200
Thin
aluminum
BK
BK
BK
BK
BK
Lead 2
71X SR2 (solder)
18
200
Aluminum
BK
BK
BK
BK
BK
Lead 1
71X SR2 (solder)
25
100
Aluminum
BK
BK
BK
BK
BK
HalFree 2
EC 680K
10
200
Open
BK
8
1
BK
BK
HalFree 2
EC 680K
12
200
Open
BK
70
13
4
BK
Содержание DELTA 50
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