Matches in SemOpenAlex for { <https://semopenalex.org/work/W2469953178> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2469953178 abstract "Measurements have been made at the Los Alamos National Laboratory (LANL) in the US and the Power Reactor Nuclear Fuel Development Corporation/Plutonium Fuel Production Facility (PNC/PFPF) in Japan with the Passive Neutron Waste Assay System (JCC-21) employing the Add-a-Source technique to quantify the plutonium content in 208 liter drums. The JCC-21 was jointly developed by Canberra Nuclear and LANL. High counting efficiency is obtained by using multiple {sup 3}He detectors in a 4{pi} geometry, and a carefully-designed high-density polyethylene moderator provides relative insensitivity to the effects of scattering reactions in the matrix. Additional high-density polyethylene also provides shielding to reduce the low-energy ambient neutron background and improves the detection limit. The Add-a-Source technique developed by LANL provides a significant improvement in accounting for matrix effects by actually measuring the matrix absorption of neutrons from a small {sup 252}Cf source and correcting the detected flux for the matrix absorption. Matrix effects and corrections using the Add-a-Source technique were evaluated during installation. A detectability limit of 0.73 mg {sup 240}Pu{sub eff} was measured for coincidence count at PNC/PFPF, making the JCC-21 one of the most sensitive and accurate NDA systems for analysis of plutonium-bearing waste. A detectability limit of 0.4 mg {supmore » 240}Pu{sub eff} was measured for total counts at LANL, demonstrating a lower detection limit for waste where the ({alpha},n) component is known. Enhancements to the counter design are being investigated to improve the sensitivity by reducing the background and increasing the counting efficiency. New counting techniques are also being investigated to improve the accuracy of the assay. The results of these enhancements and new techniques are presented.« less" @default.
- W2469953178 created "2016-07-22" @default.
- W2469953178 creator A5077462018 @default.
- W2469953178 creator A5078119563 @default.
- W2469953178 date "1993-12-31" @default.
- W2469953178 modified "2023-09-26" @default.
- W2469953178 title "Results of low level waste analysis of plutonium with a passive neutron coincidence counter" @default.
- W2469953178 cites W1565431628 @default.
- W2469953178 cites W1597225649 @default.
- W2469953178 cites W187782831 @default.
- W2469953178 cites W196803602 @default.
- W2469953178 hasPublicationYear "1993" @default.
- W2469953178 type Work @default.
- W2469953178 sameAs 2469953178 @default.
- W2469953178 citedByCount "0" @default.
- W2469953178 crossrefType "journal-article" @default.
- W2469953178 hasAuthorship W2469953178A5077462018 @default.
- W2469953178 hasAuthorship W2469953178A5078119563 @default.
- W2469953178 hasConcept C106487976 @default.
- W2469953178 hasConcept C114529599 @default.
- W2469953178 hasConcept C116915560 @default.
- W2469953178 hasConcept C121332964 @default.
- W2469953178 hasConcept C12294094 @default.
- W2469953178 hasConcept C127413603 @default.
- W2469953178 hasConcept C152568617 @default.
- W2469953178 hasConcept C177322064 @default.
- W2469953178 hasConcept C181833780 @default.
- W2469953178 hasConcept C185544564 @default.
- W2469953178 hasConcept C185592680 @default.
- W2469953178 hasConcept C43617362 @default.
- W2469953178 hasConcept C540271850 @default.
- W2469953178 hasConcept C81988546 @default.
- W2469953178 hasConceptScore W2469953178C106487976 @default.
- W2469953178 hasConceptScore W2469953178C114529599 @default.
- W2469953178 hasConceptScore W2469953178C116915560 @default.
- W2469953178 hasConceptScore W2469953178C121332964 @default.
- W2469953178 hasConceptScore W2469953178C12294094 @default.
- W2469953178 hasConceptScore W2469953178C127413603 @default.
- W2469953178 hasConceptScore W2469953178C152568617 @default.
- W2469953178 hasConceptScore W2469953178C177322064 @default.
- W2469953178 hasConceptScore W2469953178C181833780 @default.
- W2469953178 hasConceptScore W2469953178C185544564 @default.
- W2469953178 hasConceptScore W2469953178C185592680 @default.
- W2469953178 hasConceptScore W2469953178C43617362 @default.
- W2469953178 hasConceptScore W2469953178C540271850 @default.
- W2469953178 hasConceptScore W2469953178C81988546 @default.
- W2469953178 hasLocation W24699531781 @default.
- W2469953178 hasOpenAccess W2469953178 @default.
- W2469953178 hasPrimaryLocation W24699531781 @default.
- W2469953178 hasRelatedWork W1489087418 @default.
- W2469953178 hasRelatedWork W1493696032 @default.
- W2469953178 hasRelatedWork W1495261171 @default.
- W2469953178 hasRelatedWork W1565431628 @default.
- W2469953178 hasRelatedWork W1597225649 @default.
- W2469953178 hasRelatedWork W182234707 @default.
- W2469953178 hasRelatedWork W2047519795 @default.
- W2469953178 hasRelatedWork W2054116662 @default.
- W2469953178 hasRelatedWork W2068227585 @default.
- W2469953178 hasRelatedWork W2188430138 @default.
- W2469953178 hasRelatedWork W2469292478 @default.
- W2469953178 hasRelatedWork W2485672680 @default.
- W2469953178 hasRelatedWork W26243039 @default.
- W2469953178 hasRelatedWork W2827748 @default.
- W2469953178 hasRelatedWork W292584730 @default.
- W2469953178 hasRelatedWork W50838722 @default.
- W2469953178 hasRelatedWork W57174356 @default.
- W2469953178 hasRelatedWork W79558857 @default.
- W2469953178 hasRelatedWork W2187939090 @default.
- W2469953178 hasRelatedWork W2841941488 @default.
- W2469953178 isParatext "false" @default.
- W2469953178 isRetracted "false" @default.
- W2469953178 magId "2469953178" @default.
- W2469953178 workType "article" @default.