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Sample-Holding Dummy Fuel Element
Fluence Rates at 1 MWth
Thermal Neutron
Fluence Rate
(n cm-2 s-1)
|
Epi-thermal Neutron
Fluence Rate
(n cm-2 s-1)
|
Cadmium
Ratio
for Gold
|
|
1.0 x 1013
|
1 to 2 x 1012
|
2
|
Usable Dimension
This device is an aluminum fixture machined to the same dimensions
as a normal OSTR fuel element but contains no fuel. It has a void space
inside for samples, with dimensions as given below, and separates in the
middle using a threaded and gasketed joint. It can be placed in any core
grid position desire, but is usually used in the innermost B-ring position
to achieve a maximum neutron flux.
OSU has two such dummy elements with inner void dimensions as follows:
Dummy Element No. 1
| Diameter: |
1.0 inches |
OR |
Diameter: |
1.125inches |
|
Length: |
21.5 inches |
|
Length: |
6.0 inches |
Dummy Element No. 2
| Diameter: |
1.125 inches |
|
|
Length:
|
9.5 inches |
Encapsulation Requirements
|
Facility: Sample Holding Fuel Element (Dummy)
|
|
Physical Form
of Material
|
Minimum Containment
|
|
Primary
|
Secondary
|
Without
Cadmium
Covers
|
Stable Solid
|
Flame-sealed quartz or
sealed aluminum container
|
Gasket-sealed dummy
element
|
Liquid,
Powder, or
Other loose
Solid Material
|
Flame-sealed quartz or
sealed aluminum container
|
Gasket-sealed dummy
element
|
See also General Limitations on Experiments
Performed
|
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