The absence of metamictisation in natural monazite

J 2020

The absence of metamictisation in natural monazite

NASDALA, Lutz, Shavkat AKHMADALIEV, Boris E. BURAKOV, N. Chutimun CHANMUANG, Radek ŠKODA et. al.

Základní údaje

Originální název

The absence of metamictisation in natural monazite

Autoři

NASDALA, Lutz, Shavkat AKHMADALIEV, Boris E. BURAKOV, N. Chutimun CHANMUANG a Radek ŠKODA (203 Česká republika, domácí)

Vydání

Scientific reports, London, Nature Research, 2020, 2045-2322

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.379

Kód RIV

RIV/00216224:14310/20:00117566

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1038/s41598-020-71451-7

UT WoS

000570970000004

Klíčová slova anglicky

Mineralogy; Solid Earth sciences

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 1. 2021 14:45, Mgr. Marie Šípková, DiS.

Anotace

V originále

The actinide-containing mineral monazite-(Ce) is a common accessory rock component that bears petrogenetic information, is widely used in geochronology and thermochronology, and is considered as potential host material for immobilisation of radioactive waste. Natural samples of this mineral show merely moderate degrees of radiation damage, despite having sustained high self-irradiation induced by the decay of Th and U (for the sample studied herein 8.9 +/- 0.3x10(19) alpha /g). This is assigned to low damage-annealing temperature of monazite-(Ce) and "alpha-particle-assisted reconstitution". Here we show that the response of monazite-(Ce) to alpha radiation changes dramatically, depending on the damage state. Only in radiation-damaged monazite-(Ce), He-4 ions cause gradual structural restoration. In contrast, its high-temperature annealed (i.e. well crystalline) analogue and synthetic CePO4 experience He-irradiation damage. Alpha-assisted annealing contributes to preventing irradiation-induced amorphisation ("metamictisation") of monazite-(Ce); however, this process is only significant above a certain damage level.

Citovat

NASDALA, Lutz, Shavkat AKHMADALIEV, Boris E. BURAKOV, N. Chutimun CHANMUANG a Radek ŠKODA. The absence of metamictisation in natural monazite. Scientific reports. London: Nature Research, 2020, roč. 10, č. 1, s. 1-9. ISSN 2045-2322. Dostupné z: https://dx.doi.org/10.1038/s41598-020-71451-7.

@article{1719238,
   author = {Nasdala, Lutz and Akhmadaliev, Shavkat and Burakov, Boris E. and Chanmuang, N. Chutimun and Škoda, Radek},
   article_location = {London},
   article_number = {1},
   doi = {http://dx.doi.org/10.1038/s41598-020-71451-7},
   keywords = {Mineralogy; Solid Earth sciences},
   language = {eng},
   issn = {2045-2322},
   journal = {Scientific reports},
   title = {The absence of metamictisation in natural monazite},
   url = {https://doi.org/10.1038/s41598-020-71451-7},
   volume = {10},
   year = {2020}
}

TY  - JOUR
ID  - 1719238
AU  - Nasdala, Lutz - Akhmadaliev, Shavkat - Burakov, Boris E. - Chanmuang, N. Chutimun - Škoda, Radek
PY  - 2020
TI  - The absence of metamictisation in natural monazite
JF  - Scientific reports
VL  - 10
IS  - 1
SP  - 1-9
EP  - 1-9
PB  - Nature Research
SN  - 20452322
KW  - Mineralogy
KW  - Solid Earth sciences
UR  - https://doi.org/10.1038/s41598-020-71451-7
L2  - https://doi.org/10.1038/s41598-020-71451-7
N2  - The actinide-containing mineral monazite-(Ce) is a common accessory rock component that bears petrogenetic information, is widely used in geochronology and thermochronology, and is considered as potential host material for immobilisation of radioactive waste. Natural samples of this mineral show merely moderate degrees of radiation damage, despite having sustained high self-irradiation induced by the decay of Th and U (for the sample studied herein 8.9 +/- 0.3x10(19) alpha /g). This is assigned to low damage-annealing temperature of monazite-(Ce) and "alpha-particle-assisted reconstitution". Here we show that the response of monazite-(Ce) to alpha radiation changes dramatically, depending on the damage state. Only in radiation-damaged monazite-(Ce), He-4 ions cause gradual structural restoration. In contrast, its high-temperature annealed (i.e. well crystalline) analogue and synthetic CePO4 experience He-irradiation damage. Alpha-assisted annealing contributes to preventing irradiation-induced amorphisation ("metamictisation") of monazite-(Ce); however, this process is only significant above a certain damage level.
ER  -

NASDALA, Lutz, Shavkat AKHMADALIEV, Boris E. BURAKOV, N. Chutimun CHANMUANG a Radek ŠKODA. The absence of metamictisation in natural monazite. \textit{Scientific reports}. London: Nature Research, 2020, roč.~10, č.~1, s.~1-9. ISSN~2045-2322. Dostupné z: https://dx.doi.org/10.1038/s41598-020-71451-7.

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