## Abstract

An investigation has been made of the statistical frequency function for the distances between the {sup 238}U and the {sup 239}Pu resonances in the region 4-244 eV. It is concluded that the frequency function is probably constant but that the distances diverge appreciably from a constant function in the actual case, and that the divergence is such that the interaction effect on the resonance integral is smaller than would be expected from statistical considerations. This is also confirmed by calculations on the interaction effect. These have been performed using three different methods, namely: a) considering the actual positions and widths of the resonances, b) assuming a constant frequency function for the resonance. spacing and applying a theory developed by Rowlands and E A Fischer. c) applying a simplified, approximate method for calculations based on the statistical theory. The calculations are made for two temperatures and two values of the plutonium enrichment. It is shown that the average cross sections are considerably larger than the statistical calculations indicate.

## Citation Formats

Haeggblom, H.
A Study of the Resonance Interaction Effect between {sup 238}U and {sup 239}Pu in Lower Energy Region.
Sweden: N. p.,
1968.
Web.

Haeggblom, H.
A Study of the Resonance Interaction Effect between {sup 238}U and {sup 239}Pu in Lower Energy Region.
Sweden.

Haeggblom, H.
1968.
"A Study of the Resonance Interaction Effect between {sup 238}U and {sup 239}Pu in Lower Energy Region."
Sweden.

@misc{etde_20956252,

title = {A Study of the Resonance Interaction Effect between {sup 238}U and {sup 239}Pu in Lower Energy Region}

author = {Haeggblom, H}

abstractNote = {An investigation has been made of the statistical frequency function for the distances between the {sup 238}U and the {sup 239}Pu resonances in the region 4-244 eV. It is concluded that the frequency function is probably constant but that the distances diverge appreciably from a constant function in the actual case, and that the divergence is such that the interaction effect on the resonance integral is smaller than would be expected from statistical considerations. This is also confirmed by calculations on the interaction effect. These have been performed using three different methods, namely: a) considering the actual positions and widths of the resonances, b) assuming a constant frequency function for the resonance. spacing and applying a theory developed by Rowlands and E A Fischer. c) applying a simplified, approximate method for calculations based on the statistical theory. The calculations are made for two temperatures and two values of the plutonium enrichment. It is shown that the average cross sections are considerably larger than the statistical calculations indicate.}

place = {Sweden}

year = {1968}

month = {Dec}

}

title = {A Study of the Resonance Interaction Effect between {sup 238}U and {sup 239}Pu in Lower Energy Region}

author = {Haeggblom, H}

abstractNote = {An investigation has been made of the statistical frequency function for the distances between the {sup 238}U and the {sup 239}Pu resonances in the region 4-244 eV. It is concluded that the frequency function is probably constant but that the distances diverge appreciably from a constant function in the actual case, and that the divergence is such that the interaction effect on the resonance integral is smaller than would be expected from statistical considerations. This is also confirmed by calculations on the interaction effect. These have been performed using three different methods, namely: a) considering the actual positions and widths of the resonances, b) assuming a constant frequency function for the resonance. spacing and applying a theory developed by Rowlands and E A Fischer. c) applying a simplified, approximate method for calculations based on the statistical theory. The calculations are made for two temperatures and two values of the plutonium enrichment. It is shown that the average cross sections are considerably larger than the statistical calculations indicate.}

place = {Sweden}

year = {1968}

month = {Dec}

}