Dual silicon surface-barrier detectors and associated electronics for monitoring chemical separation of sup 249 Cf and sup 249 Bk
The isotopes {sup 249}Cf and {sup 249}Bk are chemically separated by ion exchange chromatography at the Oak Ridge National Laboratory Transuranium Processing Plant. Control of the separation depends on the operator's ability to distinguish electronically between alpha radiation from the {sup 249}Cf and beta particles from the {sup 249}Bk. This new monitoring system consists of two surface-barrier detectors, each having its own channel of electronics and data acquisition. The two detectors are mounted in a Teflon holder and positioned near the tip of the ion exchange column, where droplets of solution are formed as the nuclides are eluted from the column. Amplifier gain and window settings on the single-channel analyzer (SCA) for one detector are adjusted to count the energetic alpha particles from the {sup 249}Cf, while the electronic settings of the other channel are adjusted to count the lower energy beta particles from {sup 249}Bk. The alpha count rate will increase first as {sup 249}Cf passes from the column; then the beta count rate increases, indicating that {sup 249}Bk is being eluted. At this point, the operator can make a cut in the separation process. 4 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7167876
- Report Number(s):
- CONF-900563-2; ON: DE90010436; TRN: 90-026908
- Resource Relation:
- Conference: 7. symposium on radiation measurements and applications, Ann Arbor, MI (USA), 21-24 May 1990
- Country of Publication:
- United States
- Language:
- English
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Energy levels of {sup 249}Bk populated in the {alpha} decay of {sub 99}{sup 253}Es and {beta}{sup -} decay of {sub 96}{sup 249}Cm
Energy levels of {sup 249}Bk populated in the {alpha} decay of {sup 253} {sub 99}Es and {beta}{sup -} decay of {sup 249} {sub 96}Cm.
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ALPHA DETECTION
CHROMATOGRAPHY
BERKELIUM 249
SEPARATION PROCESSES
BETA DETECTION
CALIFORNIUM 249
AMPLIFIERS
COUNTING TECHNIQUES
DATA ACQUISITION
FABRICATION
IONS
MEASURING METHODS
MONITORING
OPERATION
ORNL
RADIATION DETECTION
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BERKELIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
CHARGED PARTICLE DETECTION
CHARGED PARTICLES
DAYS LIVING RADIOISOTOPES
DETECTION
ELECTRONIC EQUIPMENT
EQUIPMENT
EVEN-ODD NUCLEI
HEAVY NUCLEI
ISOTOPES
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
440100* - Radiation Instrumentation
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials