Dynamic compression experiments of (Mg,Fe)O at X-ray free electron laser and large laser facilities

Khachiwan Buakor

doi:10.18453/rosdok_id00005270

Khachiwan Buakor

Dynamic compression experiments of (Mg,Fe)O at X-ray free electron laser and large laser facilities

Universität Rostock, 2024

https://doi.org/10.18453/rosdok_id00005270

Abstract: This work investigates the phase transition of (Mg,Fe)O and its end-member FeO. By combining the shock compression technique together with X-ray diffraction (XRD) and velocity interferometer (VISAR), the structural phase changes along their Hugoniot of (Mg,Fe)O and FeO under high pressure and temperature were probed up to 270 GPa. The solid-liquid boundary of FeO and the B1-B2 phase transition of (Mg,Fe)O could be observed. These conditions could occur in super-Earths with deeper core-mantle boundaries and the phase transition could influence the rheological properties of the mantle.

Dissertation Freier Zugang

Titel:

Dynamic compression experiments of (Mg,Fe)O at X-ray free electron laser and large laser facilities

Beteiligte Personen:

Khachiwan Buakor[VerfasserIn]
	139486762X
Thomas Tschentscher[AkademischeR BetreuerIn]
	European XFEL
Carmen Sanchez-Valle[AkademischeR BetreuerIn]
	0000-0001-5046-1612
	1089488408
	Universität Münster, Institut für Mineralogie
Hauke Marquardt[AkademischeR BetreuerIn]
	139721215
	University of Oxford, Department of Earth Sciences

Beteiligte Körperschaften:

Universität Rostock[Grad-verleihende Institution]
	38329-6
Universität Rostock. Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution]
	2147083-2

Zusammenfassung:

This work investigates the phase transition of (Mg,Fe)O and its end-member FeO. By combining the shock compression technique together with X-ray diffraction (XRD) and velocity interferometer (VISAR), the structural phase changes along their Hugoniot of (Mg,Fe)O and FeO under high pressure and temperature were probed up to 270 GPa. The solid-liquid boundary of FeO and the B1-B2 phase transition of (Mg,Fe)O could be observed. These conditions could occur in super-Earths with deeper core-mantle boundaries and the phase transition could influence the rheological properties of the mantle. [Englisch]

Dokumenttyp:

Dissertation

Einrichtung:

Mathematisch-Naturwissenschaftliche Fakultät

Sprache:

Englisch

Sachgruppe der DNB:

530 Physik

Umfang:

1 Online-Ressource (xvii, 116 Seiten)

Veröffentlichung /
Entstehung:

Rostock: Universität Rostock