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14 MeV Neutrons
book

14 MeV Neutrons

by Vladivoj Valkovic
August 2015
Intermediate to advanced content levelIntermediate to advanced
516 pages
16h 29m
English
CRC Press
Content preview from 14 MeV Neutrons
3.4 Well Logging Sealed-Tube Accelerators
55
(a)
Peak neutron
yield 2 × 10
8
n/s
Average neutron
yield
10
8
n/s
(b
)
100 200 300 400 500 600
150 μs
300 μs
Time (μs)
Pe
ak neutron yield
10
9
n/s
Average neutron
yield 10
8
n/s
100 200 300 400 500 600 Time (μs
)
300 μs
30 μs
Figure 3.14 Two modes of operation with an average output of 10
8
n/s, (a) peak neu-
tron yield of 10
9
n/s, pulse width 30 μs and (b) peak neutron yield of 2x10
8
n/s, pulse
width 150 μs.
TABLE 3.3 VNIIA LOGGING GENERATORS USING VACUUM VNT AND
GASFILLED GFNT NEUTRON TUBES
Type Marked Features
Flux
(n/s)
Lifetime
(h)
Diameter
(mm)
Length
(mm)
Frequency
(kHz)
VNT ING-10-
20-120
General 1.0 × 10
8
150 ...
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Publisher Resources

ISBN: 9781482238013