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1-16 OF 16 RESULTS FOR
electron spin echo envelope modulation spectroscopy
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Journal Article
Radiation-induced defects in apophyllites. II. An O − centre and related O − –O − pairs in hydroxylapophyllite Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 January 2010
European Journal of Mineralogy (2010) 22 (1): 89–102.
... silicates, we have analysed this O − centre in the natural hydroxylapophyllite by using both continuous-wave (CW) single-crystal EPR spectra and pulsed electron spin echo envelope modulation (ESEEM) spectra. Results reported herein confirm the O − centre to reside at the hydroxyl oxygen site. Moreover...
FIGURES
Journal Article
Arsenic speciation in danburite (CaB 2 Si 2 O 8 ): a synchrotron XAS and single-crystal EPR study Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 March 2014
European Journal of Mineralogy (2014) 26 (1): 113–125.
...) superhyperfine parameters determined from pulsed electron spin echo envelope modulation (ESEEM) spectroscopy. Center III is the [AsO 3 ] 2− radical on the basis of its characteristic 75 As hyperfine constants [A 1 /h = 2406.0(1) MHz, A 2 /h = 1903.4(1) MHz and A 3 /h = 1892.1(1) MHz]. The [AsO 3 ] 2− radical...
FIGURES
Journal Article
EPR and magnetic investigations on sulphides and sulphosalts Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 November 2002
European Journal of Mineralogy (2002) 14 (6): 1053–1060.
... pulsed microwave sources, generating the so-called Electron Spin Echoes (ESE). Different experiments, such as echo-EPR (EEPR) and ESE-envelope modulation (ESEEM), have been described in the literature ( e.g. Kevan, 1990 ; Schweiger, 1990 ; Barbon et al. , 1999 ) and the observed physical parameters...
FIGURES
Journal Article
Electron Paramagnetic Resonance Spectroscopy: Basic Principles, Experimental Techniques and Applications to Earth and Planetary Sciences Available to Purchase
Publisher: Mineralogical Society of America
Published: 01 January 2014
Reviews in Mineralogy and Geochemistry (2014) 78 (1): 655–690.
..., most previous reviews on applications to minerals focused almost exclusively on conventional continuous-wave (CW) techniques, whereas more advanced techniques such as pulse electron nuclear double resonance (ENDOR) and electron spin echo envelope modulation (ESEEM) spectroscopy were generally...
FIGURES
Journal Article
SINGLE-CRYSTAL EPR STUDY OF Fe 3+ AND VO 2+ IN PREHNITE FROM THE JEFFREY MINE, ASBESTOS, QUEBEC Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 August 2009
The Canadian Mineralogist (2009) 47 (4): 933–945.
... double resonance (ENDOR) or electron-spin-echo-envelope-modulation (ESEEM) spectroscopy ( e.g., Mao et al. 2009 ) and will be reported in a separate contribution. Therefore, emphasis herein will be given to the VO 2+ radical and the Fe 3+ centers. F ig . 3. Representative single-crystal EPR...
FIGURES
Journal Article
Radiation-induced defects in quartz: a multifrequency EPR study and DFT modelling of new peroxy radicals Available to Purchase
Journal: Mineralogical Magazine
Published: 01 August 2009
Mineralogical Magazine (2009) 73 (4): 519–535.
... in previous X-band (∼9.4 GHz) EPR studies ( Table 1 ). Moreover, our multifrequency EPR spectra, together with results from pulsed electron nuclear double resonance (ENDOR) spectroscopy, electron spin echo envelope modulation (ESEEM) spectroscopy, and density functional theory (DFT) calculations, provided...
FIGURES
Journal Article
Single-crystal EPR and ENDOR study of an Al—O − center in prehnite: implications for aluminum-associated oxyradicals in layer silicates Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 June 2010
European Journal of Mineralogy (2010) 22 (3): 381–392.
... and their analogues by single-crystal continuous-wave (CW) EPR, pulsed electron nuclear double resonance (ENDOR), and pulsed electron spin echo envelope modulation (ESEEM) spectroscopy ( Mao & Pan, 2009 ; Mao et al ., 2010 ), we have investigated prehnite (Ca 2 Al [AlSi 3 O 10 ](OH) 2 ) before and after gamma...
FIGURES
Journal Article
Mechanisms of Cr and H incorporation in stishovite determined by single-crystal EPR spectroscopy and DFT calculations Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 2011
American Mineralogist (2011) 96 (8-9): 1331–1342.
... structures by use of pulse electron nuclear double resonance (ENDOR) or electron spin echo envelope modulation (ESEEM) spectroscopy ( Schweiger and Jeschke 2001 ; Nilges et al. 2009 ). Our DFT calculations for Models II, III, IV, and V having a substitutional Cr 3+ ion at the Si site without...
FIGURES
Journal Article
Spectroscopy of Epidote Minerals Available to Purchase
Publisher: Mineralogical Society of America
Published: 02 January 2004
Reviews in Mineralogy and Geochemistry (2004) 56 (1): 125–170.
.... The position of the bands c, d, and e is independent on pressure whereas the band b shows a notable pressure shift to lower wavenumber. Redrawn and modified after Burns and Strens (1967) and Taran and Langer (2000) . The Fe 3+ ion has a d 5 electronic configuration and thus only spin forbidden dd...
FIGURES
Journal Article
Theoretical calculations of [AlO 4 / M + ] 0 defects in quartz and crystal-chemical controls on the uptake of Al Available to Purchase
Journal: Mineralogical Magazine
Published: 01 August 2009
Mineralogical Magazine (2009) 73 (4): 537–550.
... of 0.26099. Therefore, other experimental techniques such as electron nuclear double resonance (ENDOR) and electron spin echo envelope modulation (ESEEM) spectroscopy, which are more sensitive to small hyperfine structures (e.g. Mao et al ., 2009 ), may be required to detect and characterize the [AlO 4 /K...
FIGURES
![First thumbnail for: Theoretical calculations of [AlO 4 / M + ] 0 defec...](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/minmag/73/4/10.1180_minmag.2009.073.4.537/3/s_02-bot-01.jpeg?Expires=1756059391&Signature=Aqa-yBEUvLwt1kjKqNUw7njpCKRSRgh1lSgM3pICD-xYY95w5kzftTiFOtblmlkdvpiHQEBWvYK4QrmE9FlGUEGeBoNz1OD8JQf~eTEP~kXrhkSSprfspkwuqnH~8gbadESiHknhsYvmwXFsqGGV08X~DV2fw9guFdihcjlCkeiYlnUhciuPar1cayeb8W-9hxkWt8vIEsWyK1~Mf~AzAnbX5vueAl-6q~lfqsD8bHopO1uGmZkrH8ti2u-03HPWnikbJa3PqVnubOKN2vhaQqwPcFSfko864JoYRcXzPeh6GsfYsn8fn458QAaWJm3b1jP7efrn5bO2S55nWEYUpg__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
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Journal Article
Interaction of titanium with smectite within the scope of a spent fuel repository: A spectroscopic approach Open Access
Journal: Clay Minerals
Published: 01 January 2015
Clay Minerals (2016) 51 (2): 249–266.
... ppm. 19 F MAS-NMR spectra were obtained using a Bruker DSX-400 spectrometer at 379.23 MHz with a Hahn echo pulse sequence (π/2 pulse τ–π pulse τ–acquisition), 10 kHz spinning speed, π/2 pulse width of 7 μs and 20 s recycle time. The value of τ was synchronized to a rotation period of the spinner (τ...
FIGURES
Journal Article
Hydrocarbon Behavior at Nanoscale Interfaces Available to Purchase
Publisher: Mineralogical Society of America
Published: 01 January 2013
Reviews in Mineralogy and Geochemistry (2013) 75 (1): 495–545.
... , 2006 ; Tsomaia et al. 2003 ) or J-coupled NMR spectroscopy. Surface selective spin correlation methods can be used on both raw samples and these same samples during and after contact with fluids of interest to map out possible reactive structures as well as reaction products or sites depleted...
FIGURES
Journal Article
Rapid modeling of borehole measurements of nuclear magnetic resonance via spatial sensitivity functions Available to Purchase
Journal: Geophysics
Publisher: Society of Exploration Geophysicists
Published: 03 September 2021
Geophysics (2021) 86 (5): D149–D176.
... transverse relaxation time is described as ( Kleinberg and Horsfield, 1990 ) 1 T 2 D = D ( γ G T E ) 2 12 , (6) where T E is the interecho time in Carr-Purcell-Meiboom-Gill (CPMG)-like sequences (spin echo), γ is the gyromagnetic ratio of hydrogen nuclei...
FIGURES
Journal Article
Recent Exploration of the Moon: Science from Lunar Missions Since 2006 Available to Purchase
Publisher: Mineralogical Society of America
Published: 01 December 2023
Reviews in Mineralogy and Geochemistry (2023) 89 (1): 1–51.
...-pass filter >1.4 µm, NIR2 had no filter Mid-Infrared Cameras × 2 (MIR1, MIR2) Plume imaging 6.0–13.5 µm, microbolometers, 164 × 128 pixels, 30 mm lens, f/1.6, 18.6° FOV; MIR1 had band-pass filter at 6-10 µm, NIR2 had no filter Total Luminescence Photometer (TLP): Sensor Electronics Module...
FIGURES
Book Chapter
Encyclopedic Dictionary of Applied Geophysics Available to Purchase
Series: Society of Exploration Geophysicists Geophysical References Series
Publisher: Society of Exploration Geophysicists
Published: 01 January 2002
DOI: 10.1190/1.9781560802969.ch1
EISBN: 9781560802969
...-bond log and fracture log . amplitude map : See amplitude extraction . amplitude modulation (AM) : Variations in the amplitude of a high-frequency carrier wave according to low-frequency information. See Figure M-16 . amplitude of the envelope : See complex trace analysis...
Book Chapter
Uygulamalı Jeofiziğin Ansiklopedik Sözlüğü Available to Purchase
Series: Society of Exploration Geophysicists Distinguished Instructor Series
Publisher: Society of Exploration Geophysicists
Published: 01 January 2006
DOI: 10.1190/1.9781560801979.ch1
EISBN: 9781560801979
... birimi dB/dalgaboyudur. (tipik olarak 0.20-0.50 dB/λ dır). Sönümün nedeni belirtilebilir ya da belirtilmeyebilir. (absorption ya da başka bir mekanizma olabilir.). Q 'ya bk. ac : A lternating C urrent. Alternatif akım. ac-bias recording : Module olan mesaj sinyalinin sabit genlikli taşıyicı...
