Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Marie C. Kirkegaard"'
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
Abstract Inelastic neutron scattering (INS) is uniquely sensitive to hydrogen due to its comparatively large thermal neutron scattering cross-section (82 b). Consequently, the inclusion of water in real samples presents significant challenges to INS
Externí odkaz:
https://doaj.org/article/3deba7fe32364bb6a8e95c6fe5aafb69
Autor:
Jennifer L. Niedziela, Ketan Maheshwari, Ashley E. Shields, Andrew Miskowiec, Roger J. Kapsimalis, Daniel J. Staros, Marie C. Kirkegaard, Brian B. Anderson
Publikováno v:
The Journal of Physical Chemistry C. 123:15985-15995
Amorphous uranium oxides are known to arise via industrial processes relevant to the nuclear fuel cycle yet evade rigorous structural characterization. A promising approach is to develop statistica...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c47ac746d213cf46f9f315f81156daed
https://doi.org/10.1021/acs.jpcc.9b03274
https://doi.org/10.1021/acs.jpcc.9b03274
Autor:
Ketan Maheshwari, Jennifer L. Niedziela, Ashley E. Shields, Roger J. Kapsimalis, Michael W. Ambrogio, Brian B. Anderson, Marie C. Kirkegaard, Andrew Miskowiec
Publikováno v:
Optical Materials. 89:295-298
Mixed-phase and low-symmetry systems are widely observed among uranium oxide materials. Amorphous-U2O7 forms during the calcination of studtite, a uranyl peroxide mineral. Using a genetic algorithm search for stable crystalline phases, we have identi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f854488aa2fd2e27b442e494221ad0a
https://doi.org/10.1016/j.optmat.2019.01.040
https://doi.org/10.1016/j.optmat.2019.01.040
Autor:
Marie C. Kirkegaard, Jennifer L. Niedziela, Michael W. Ambrogio, Andrew Miskowiec, Tyler L. Spano, Brian B. Anderson, Ashley E. Shields
Publikováno v:
Dalton Transactions. 48:13685-13698
Hydrated uranyl fluoride, [(UO2F2)(H2O)]7·4H2O, is not stable at elevated water vapor pressure, undergoing a complete loss of fluorine to form a uranyl hydroxide hydrate. Powder X-ray diffraction data of the resultant uranyl hydroxide species is pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46782f20a345341048c843a30a03e0ed
https://doi.org/10.1039/c9dt02835h
https://doi.org/10.1039/c9dt02835h
Autor:
Marie C, Kirkegaard, Tyler L, Spano, Michael W, Ambrogio, J L, Niedziela, Andrew, Miskowiec, Ashley E, Shields, Brian B, Anderson
Publikováno v:
Dalton transactions (Cambridge, England : 2003). 48(36)
Hydrated uranyl fluoride, [(UO2F2)(H2O)]7·4H2O, is not stable at elevated water vapor pressure, undergoing a complete loss of fluorine to form a uranyl hydroxide hydrate. Powder X-ray diffraction data of the resultant uranyl hydroxide species is pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ccc36c31e96a5cf788a9c31dad79e0e8
https://pubmed.ncbi.nlm.nih.gov/31468045
https://pubmed.ncbi.nlm.nih.gov/31468045
Autor:
Jennifer L. Niedziela, Brian B. Anderson, Marie C. Kirkegaard, Ashley E. Shields, Andrew Miskowiec
Publikováno v:
Inorganic chemistry. 58(11)
We confirm that synthetic uranyl hydroxide hydrate metaschoepite [(UO)24O(OH)6]·5H2O is unstable against dehydration under dry conditions, and we present a structural and vibrational spectroscopic study of synthetic metaschoepite and its ambient tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40680eb701202c09b88ae3a9a7dcc0f1
https://pubmed.ncbi.nlm.nih.gov/31099558
https://pubmed.ncbi.nlm.nih.gov/31099558
Publikováno v:
Scientific Reports
Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
Inelastic neutron scattering (INS) is uniquely sensitive to hydrogen due to its comparatively large thermal neutron scattering cross-section (82 b). Consequently, the inclusion of water in real samples presents significant challenges to INS data anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3cfdd446c1102036bbf6bb2ffa23c8e
https://pubmed.ncbi.nlm.nih.gov/31324843
https://pubmed.ncbi.nlm.nih.gov/31324843
Autor:
Marie C. Kirkegaard, Jennifer L. Niedziela, Brian B. Anderson, Tyler L. Spano, Michael W. Ambrogio, Ashley E. Shields, Andrew Miskowiec
Publikováno v:
Journal of Nuclear Materials. 529:151889
Under humid conditions, uranyl fluoride ([(UO2F2)(H2O)]7·4H2O) undergoes a loss of fluorine to form a uranyl hydroxide species, which can be further hydrated to form a uranyl peroxide species. X-ray diffraction data of the uranyl peroxide product is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e393e0530fbc423d38e530bf53911938
https://doi.org/10.1016/j.jnucmat.2019.151889
https://doi.org/10.1016/j.jnucmat.2019.151889
Publikováno v:
Inorganic chemistry. 57(10)
We have demonstrated the solid-state formation of a uranyl peroxide (UP) species from hydrated uranyl fluoride via a uranyl hydroxide intermediate, the first observation of a UP species formed in a solid-state reaction. Water vapor pressure is shown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0de2237635c89d37a6a8927033314dd
https://pubmed.ncbi.nlm.nih.gov/29745654
https://pubmed.ncbi.nlm.nih.gov/29745654
Publikováno v:
Inorganic chemistry. 57(6)
Quartz single-crystal samples consisting of α-quartz crystal structure were neutron irradiated to fluences of 5 × 1018, 4 × 1019, and 2 × 1020 n/cm2 (E > 0.1 MeV) at two temperatures (52 and 95 °C). The changes in the α-quartz phase as a functi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f95b78b1c94a9f8d4750b16c4399be9
https://pubmed.ncbi.nlm.nih.gov/29513003
https://pubmed.ncbi.nlm.nih.gov/29513003