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This fast-spinning solid state MAS probe is part of narrow probe family designed to fit inside 29 mm of available space in
our high field 830 MHz magnet with ultra-narrow bore.
This MAS probe features custom 2.0 mm stator designed by ICBP (Tallinn, Estonia),
which can reach spinning speeds of 40 kHz. The resonance can be tuned to many nuclei of interest
below and including 31P
by choosing appropriate frequency insert.
Applications include high resolution NMR of quadrupolar nuclei with large coupling constants.
Central transitions of such nuclei are broadened by the 2nd-order quadrupolar
effect that cannot be averaged by MAS alone. In order to separate overlap from
spinning sidebands, MAS frequencies faster than central transition linewidth are required.
Another application of fast MAS is observation of satellite transitions which sometimes
offer higher spectral resolution than commonly observed central transitions.
27Al MAS spectra of 9Al2O3+2B2O3.
Spinning speed is 40 kHz.
Sample courtesy of D. Massiot, CNRS, Orleans, France. |
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This table will help you select frequency insert for your isotope.
Tuning range for each insert, F min...F max, is a
frequency range with RF reflection below -35dB in unloaded probe.
It is accurate for most solid samples.
If you cannot find your isotope listed in the table, contact
Peter Gor'kov to arrange a new insert.
Insert
(pF) |
F min
(MHz) |
F max
(MHz) |
Isotopes |
| 51 |
50.7 |
53.3 |
67Zn |
| 33.3 |
58.5 |
62.6 |
14N |
| 21.3 |
68.5 |
75.7 |
61Ni |
| 15 |
76.3 |
87.1 |
91Zr,
85Rb,
35Cl,
135Ba,
50V,
15N |
| 6.7 |
88.7 |
108.4 |
10B,
153Eu,
137Ba,
175Lu,
181Ta,
123Sb |
| None |
108.4 |
160.6 |
123Sb,
133Cs,
17O,
9Be,
139La,
6Li
2H,
209Bi,
75As,
171Yb,
199Hg,
77Se |
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Insert
(pF) |
F min
(MHz) |
F max
(MHz) |
Isotopes |
| 15 |
152.8 |
160.1 |
77Se |
| 13.3 |
160.0 |
168.3 |
29Si,
127I,
165Ho |
| 12 |
166.8 |
176.7 |
165Ho,
207Pb,
111Cd |
| 10 |
181.0 |
193.6 |
159Tb,
185Re,
113Cd,
115In,
113In |
| 6.7 |
196.3 |
213.0 |
121Sb,
69Ga,
45Sc,
93Nb,
55Mn,
151Eu,
79Br,
13C,
51V |
| 6.0 |
202.4 |
222.4 |
93Nb,
55Mn,
151Eu,
79Br,
13C,
51V,
27Al,
125Te,
23Na,
63Cu |
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...using this intrument
1. Z. Gan et al., J. Am. Chem. Soc. 124 (20) 5634-5935 (2002), PDF
2. C.T.S. Choi et al., Chem. Matter 14 (10) 4096-4103 (2002), PDF
3. P.L. Bryant et al., J. Magn. Reson. 170 (2), 257-262 (2004), PDF
4. F. Barberon et al., Magnet. Reson. Imaging, 23, 267 (2005), PDF
5. J. Lu et al., Phys. Rev. B, 74, 125208 (2006), PDF
6. T.H. Sefzik et al., Chem. Phys. Lett. 434 (2), 312-315 (2007),
7. F.J. Wu et al., Inorg. Chem. 46 (2), 44-47 (2006), PDF
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