Impact of alpha-damage and helium production on the heat capacity of actinide oxides
The heat capacity of alpha-damaged uranium, plutonium, and americium mixed dioxide (Uu, Puv, Amw)O2±x samples was measured during thermal annealing. The excess of heat released was assessed and the recovery stages associated with various defects described by integrating results from transmission ele...
Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-02-01
|
| Series: | Frontiers in Nuclear Engineering |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fnuen.2025.1495360/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850079985511956480 |
|---|---|
| author | Thierry Wiss Rudy J. M. Konings Dragos Staicu Alessandro Benedetti Jean-Yves Colle Vincenzo V. Rondinella Emilio Maugeri Zeynep Talip Arne Janssen Oliver Dieste Luana Cognini Emanuele De Bona Gianguido Baldinozzi Christine Guéneau |
| author_facet | Thierry Wiss Rudy J. M. Konings Dragos Staicu Alessandro Benedetti Jean-Yves Colle Vincenzo V. Rondinella Emilio Maugeri Zeynep Talip Arne Janssen Oliver Dieste Luana Cognini Emanuele De Bona Gianguido Baldinozzi Christine Guéneau |
| author_sort | Thierry Wiss |
| collection | DOAJ |
| description | The heat capacity of alpha-damaged uranium, plutonium, and americium mixed dioxide (Uu, Puv, Amw)O2±x samples was measured during thermal annealing. The excess of heat released was assessed and the recovery stages associated with various defects described by integrating results from transmission electron microscopy, helium desorption spectroscopy, thermal diffusivity, and XRD annealing studies. It is shown that different defect-annealing stages could be singled out. It could also be evidenced that the excess of energy stored in defects tends to saturate after rather low damage levels, but that, with increasing radiogenic helium production, another contribution of stored energy appears which can be attributed to the formation of He-defect complexes that cannot be annihilated until higher temperatures are reached. |
| format | Article |
| id | doaj-art-d674066ba2d04ababf95050de35e6a77 |
| institution | DOAJ |
| issn | 2813-3412 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Nuclear Engineering |
| spelling | doaj-art-d674066ba2d04ababf95050de35e6a772025-08-20T02:45:03ZengFrontiers Media S.A.Frontiers in Nuclear Engineering2813-34122025-02-01410.3389/fnuen.2025.14953601495360Impact of alpha-damage and helium production on the heat capacity of actinide oxidesThierry Wiss0Rudy J. M. Konings1Dragos Staicu2Alessandro Benedetti3Jean-Yves Colle4Vincenzo V. Rondinella5Emilio Maugeri6Zeynep Talip7Arne Janssen8Oliver Dieste9Luana Cognini10Emanuele De Bona11Gianguido Baldinozzi12Christine Guéneau13European Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, Joint Research Centre, Karlsruhe, GermanyEuropean Commission, DG Energy, Luxembourg, LuxembourgEuropean Commission, DG Energy, Luxembourg, LuxembourgDepartment of Industrial Engineering, University of Trento, Trento, ItalyCentraleSupélec, CNRS, SPMS, Université Paris-Saclay, Paris, FranceCEA, Service de Recherche en Corrosion et Comportement des Matériaux, Université Paris-Saclay, Paris, FranceThe heat capacity of alpha-damaged uranium, plutonium, and americium mixed dioxide (Uu, Puv, Amw)O2±x samples was measured during thermal annealing. The excess of heat released was assessed and the recovery stages associated with various defects described by integrating results from transmission electron microscopy, helium desorption spectroscopy, thermal diffusivity, and XRD annealing studies. It is shown that different defect-annealing stages could be singled out. It could also be evidenced that the excess of energy stored in defects tends to saturate after rather low damage levels, but that, with increasing radiogenic helium production, another contribution of stored energy appears which can be attributed to the formation of He-defect complexes that cannot be annihilated until higher temperatures are reached.https://www.frontiersin.org/articles/10.3389/fnuen.2025.1495360/fullheat capacityalpha-damageactinide dioxidestored energydefectshelium |
| spellingShingle | Thierry Wiss Rudy J. M. Konings Dragos Staicu Alessandro Benedetti Jean-Yves Colle Vincenzo V. Rondinella Emilio Maugeri Zeynep Talip Arne Janssen Oliver Dieste Luana Cognini Emanuele De Bona Gianguido Baldinozzi Christine Guéneau Impact of alpha-damage and helium production on the heat capacity of actinide oxides Frontiers in Nuclear Engineering heat capacity alpha-damage actinide dioxide stored energy defects helium |
| title | Impact of alpha-damage and helium production on the heat capacity of actinide oxides |
| title_full | Impact of alpha-damage and helium production on the heat capacity of actinide oxides |
| title_fullStr | Impact of alpha-damage and helium production on the heat capacity of actinide oxides |
| title_full_unstemmed | Impact of alpha-damage and helium production on the heat capacity of actinide oxides |
| title_short | Impact of alpha-damage and helium production on the heat capacity of actinide oxides |
| title_sort | impact of alpha damage and helium production on the heat capacity of actinide oxides |
| topic | heat capacity alpha-damage actinide dioxide stored energy defects helium |
| url | https://www.frontiersin.org/articles/10.3389/fnuen.2025.1495360/full |
| work_keys_str_mv | AT thierrywiss impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT rudyjmkonings impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT dragosstaicu impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT alessandrobenedetti impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT jeanyvescolle impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT vincenzovrondinella impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT emiliomaugeri impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT zeyneptalip impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT arnejanssen impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT oliverdieste impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT luanacognini impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT emanueledebona impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT gianguidobaldinozzi impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides AT christinegueneau impactofalphadamageandheliumproductionontheheatcapacityofactinideoxides |