Mass Distribution in Fission of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">U</mml:mi></mml:mrow><mml:mrow><mml:mn>235</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>by Resonance Neutrons

Nasuhoglu, R.; Raboy, S.; Ringo, G. R.; Glendenin, L.E.; Steinberg, E.P.

doi:10.1103/physrev.108.1522

Cited by 12 publications

(3 citation statements)

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“…9 compare symmetric fission as a function of incident neutron energy (or excitation energy). The data show specific trends and are in agreement, except for resonance region 5, with previous data by Hambsch et al [2] and radiochemistry measurements by Nasuhoglu et al [22] and Faler and Tromp [23]. The radiochemistry measurements involve the ratio of the quantities of either 98 Sr or 99 Mo compared to 115 Cd resulting from fission at various incident neutron energies.…”

Section: A Multimodal Fission Modelsupporting

confidence: 89%

Fission fragment mass and energy distributions as a function of incident neutron energy measured in a lead slowing-down spectrometer

et al. 2010

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A new method of measuring fission fragment mass and energy distributions as a function of incident neutron energy in the range from below 0.1 eV to 1 keV has been developed. The method involves placing a double-sided Frisch-gridded fission chamber in Rensselaer Polytechnic Institute's lead slowing-down spectrometer (LSDS). The high neutron flux of the LSDS allows for the measurement of the energy-dependent, neutron-induced fission cross sections simultaneously with the mass and kinetic energy of the fission fragments of various small samples. The samples may be isotopes that are not available in large quantities (submicrograms) or with small fission cross sections (microbarns). The fission chamber consists of two anodes shielded by Frisch grids on either side of a single cathode. The sample is located in the center of the cathode and is made by depositing small amounts of actinides on very thin films. The chamber was successfully tested and calibrated using 0.41 ± 0.04 ng of 252 Cf and the resulting mass distributions were compared to those of previous work. As a proof of concept, the chamber was placed in the LSDS to measure the neutron-induced fission cross section and fragment mass and energy distributions of 25.3 ± 0.5 µg of 235 U. Changes in the mass distributions as a function of incident neutron energy are evident and are examined using the multimodal fission mode model.

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Section: A Multimodal Fission Modelsupporting

confidence: 89%

Fission fragment mass and energy distributions as a function of incident neutron energy measured in a lead slowing-down spectrometer

et al. 2010

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“…We turn now to the data (Figure 4). 6 ) and no experimentally significant effects were noted. Similar radiochemical experiments with uF35 had _also been undertaken at Brookhaven but these had been abandoned because of insufficient intensities of spectrometer neutrons.…”

Section: The Comparisons Of the Ratio Of Asymmetric To Symmetric Fissionmentioning

confidence: 80%

RADIOCHEMICALLY DETERMINED RATIOS OF ASYMMETRIC TO SYMMETRIC FISSION OF U$sup 233$, Pu$sup 239$, AND U$sup 235$ AS A FUNCTION OF NEUTRON ENERGY

Burgus¹

1962

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LEGAL NOTICE This report was prepared a.c;; an account of Covernutt!ut sponsored work. Neither the United States, nor the Commission, nor any person acting on behalf of the Commission: A. Makes any w~rranty or rcprcsentalinn , express or implied , with respect to the accuracy, completeness, or usefulness of the information contained in this report, or that the use of any information , •apparatus, method, or process disclosed in this report may not infringe privately owned rights; or B. Assumes any liabilities with rP

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“…However, the position of the sample inside the reactor was such that the epi-cadmium neutrons detected could not have possessed high energy. Recent investigations on the fission of U235 with energies as high as 9.5 ev show no significant change in the trough yields from that produced by thermal neutrons (47), so that little change ill the trough yields is to be expected.…”

Section: Discussionmentioning

confidence: 99%

ABSOLUTE THERMAL NEUTRON FISSION YIELDS OF U²³³

Santry¹,

Yaffe²

1960

Can. J. Chem.

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The absolute fission yields of 22 nuclides for~lled in the thermal neutron fission of U233 have been ~neasured radiochernically. Disintegration rates were measured by 4~ @-proportional counting techniques. The identity of each nuclide was established by che~llical separations and decay characteristics as determined by 4~ p-counting and -,-ray scintillation spectrometry. The reaction Co6"n,-,)Co" ovas used as a neutron flux monitor. Yields were calculated on the basis of u~U'33/ucC05q = 524/36.3.

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Mass Distribution in Fission ofU235by Resonance Neutrons

Cited by 12 publications

References 0 publications

Fission fragment mass and energy distributions as a function of incident neutron energy measured in a lead slowing-down spectrometer

Fission fragment mass and energy distributions as a function of incident neutron energy measured in a lead slowing-down spectrometer

RADIOCHEMICALLY DETERMINED RATIOS OF ASYMMETRIC TO SYMMETRIC FISSION OF U$sup 233$, Pu$sup 239$, AND U$sup 235$ AS A FUNCTION OF NEUTRON ENERGY

ABSOLUTE THERMAL NEUTRON FISSION YIELDS OF U²³³

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Mass Distribution in Fission ofU235by Resonance Neutrons

Cited by 12 publications

References 0 publications

Fission fragment mass and energy distributions as a function of incident neutron energy measured in a lead slowing-down spectrometer

Fission fragment mass and energy distributions as a function of incident neutron energy measured in a lead slowing-down spectrometer

RADIOCHEMICALLY DETERMINED RATIOS OF ASYMMETRIC TO SYMMETRIC FISSION OF U$sup 233$, Pu$sup 239$, AND U$sup 235$ AS A FUNCTION OF NEUTRON ENERGY

ABSOLUTE THERMAL NEUTRON FISSION YIELDS OF U233

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ABSOLUTE THERMAL NEUTRON FISSION YIELDS OF U²³³