Operation and control of an ion-implantation/sputtering storage device for /sup 85/Kr

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6161051

McClanahan, E D; Moss, R W; Greenwell, E N

The design and operation of a device for implanting /sup 85/Kr in a sputtered Cu-Y alloy for long-term storage tests are described. A total of approx.400 Ci of /sup 85/Kr, in a 4.2% mixture with nonradioactive isotopes, was implanted in three batches at a rate of 6.1 sccm. A triode discharge operating at a pressure of 0.4 Pa with a plasma current of 4.5 A was maintained with a potential of 67 V. The target and substrate potentials were 2400 and 290, respectively, with an ion current density of approx.100 A/m/sup 2/. The discharge and pumping action was started with nonradioactive Kr, then was switched to the radioactive gas until all in the reservoir was consumed, then again was switched to the nonradioactive gas to apply a closeout layer. The control feature used made it possible to empty the /sup 85/Kr reservoir without use of an auxiliary pumping system. 13 refs., 4 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6161051
• Report Number(s): PNL-SA-13239; CONF-851174-39; ON: DE86007724
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360106 -- Metals & Alloys-- Radiation Effects
ALLOYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COPPER ALLOYS
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ION IMPLANTATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KRYPTON 85
KRYPTON ISOTOPES
MANAGEMENT
NUCLEI
RADIOACTIVE WASTE STORAGE
RADIOISOTOPES
STORAGE
WASTE MANAGEMENT
WASTE STORAGE
YEARS LIVING RADIOISOTOPES
YTTRIUM ALLOYS