International /sup 235/U fission foil mass intercomparison

Conference · Wed Jan 01 04:00:00 EST 1986 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:6727621

Schroeder, I; Gilliam, D M; Carlson, A D; Bright, S W; Hutchinson, J M.R.

In the measurement of neutron fission cross sections, one of the larger uncertainties is associated with the mass determination of the fissionable deposit. Inconsistencies in determinations of the fission cross sections may be a result of systematic errors associated with the measurement of the deposit mass. As part of a study to check the consistency of mass scales at a number of laboratories throughout the world, two /sup 235/U deposits from the Khlopin Radium Institute (KRI) in Leningrad, USSR, were made available through the assistance of the International Atomic Energy Agency for measurements at the National Bureau of Standards (NBS) and Argonne National Laboratory (ANL). These deposits are directly traceable to foils used in very precise measurements of the /sup 235/U(n,f) cross section made in a collaborative effort by KRI and the Technical University of Dresden (TUD), GDR. The study undertaken at the NBS consisted of two parts. One part was the measurement of the alpha-decay rates of the two /sup 235/U samples (KRI VI and KRI-XV) with a low-geometry-counting spectrometry facility. The other was the measurement of the total alpha disintegration rate of the samples employing a 2II alpha counter.

• Research Organization: National Bureau of Standards, Washington, DC
• OSTI ID: 6727621
• Report Number(s): CONF-861102-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 53
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
652020 -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
ANL
CROSS SECTIONS
DATA COVARIANCES
DECAY
ERRORS
EVEN-ODD NUCLEI
FISSION
FISSION FOIL DETECTORS
HEAVY NUCLEI
IAEA
INTERNATIONAL ORGANIZATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
MINUTES LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NEUTRON DETECTORS
NUCLEAR DATA COLLECTIONS
NUCLEAR REACTIONS
NUCLEI
RADIATION DETECTORS
RADIOISOTOPES
URANIUM 235
URANIUM ISOTOPES
US AEC
US DOE
US ERDA
US NRC
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES