DNP using ground state paramagnetic centres

W.Th. Wenckebach, H. Hoogstraate, T.J.B. Swanenburg, N.J. Poulis:
Non-Exponential Bahaviour of the Polarization of Protons in (Zn,Cu)K2(SO4)2.6H2O
Phys. Lett. 26A (1968) 203-204
doi.org/10.1016/0375-9601(68)90121-7

W.Th. Wenckebach, T.J.B. Swanenburg, N.J. Poulis:
Nuclear Dynamic Polarization of Protons in Diluted Copper-Tutton Salts. I
Physica 46 (1970) 303-314
doi:10.1016/0031-8914(70)90230-2

W.Th. Wenckebach, T.J.B. Swanenburg, N.J. Poulis:
Nuclear Dynamic Polarization of Protons in Diluted Copper-Tutton Salts. II
Physica 50 (1970) 289-307
doi:10.1016/0031-8914(70)90007-8

H. Hoogstraate, J. van Houten, L.A.H. Schreurs, W.Th. Wenckebach, N.J. Poulis:
Dynamic Polarization and Cross Relaxation in Diluted Copper Tutton Salts
Physica 65 (1973) 347-361
doi:10.1016/0031-8914(73)90350-9

J.-F. Jacquinot, W.Th. Wenckebach, M. Goldman, A. Abragam:
Polarization and NMR Observation of 43Ca Nuclei in CaF2
Phys. Rev. Lett. 32 (1974) 1096-1097
doi:10.1103/PhysRevLett.32.1096

W.Th. Wenckebach, T.J.B. Swanenburg, N.J. Poulis:
Thermodynamics of Spin Systems in Paramagnetic Crystals
Phys. Rep. 14 (1974) 181-255
doi:10.1016/0370-1573(74)90017-9

S.F.J. Cox, S.F.J. Read, W.Th. Wenckebach:
Behaviour of Nuclear Spins near Highly Polarised Paramagnetic Centres
J. Phys. C: Solid State Phys. 10 (1977) 2917-2936
doi:10.1088/0022-3719/10/15/025

J. Marks, W.Th. Wenckebach, N.J. Poulis:
Properties of Electron-Irradiation-Produced O2- in Ca(OH)2
J. Phys. C: Solid State Phys. 13 (1980) 5481-5494
doi.org/10.1088/0022-3719/13/30/013

C.M.B. van der Zon, J. Marks, W.Th. Wenckebach, N.J. Poulis:
Dynamic Nuclear Polarization and Spin-Lattice Relaxation of the Proton spins in Ca(OH)2
Physica 145B (1987) 153-164
doi:10.1016/0378-4363(87)90077-5

W.Th. Wenckebach
Thermodynamics of Dynamic Nuclear Polarization
Nucl. Instr. Meth. in Phys. Res. A356 (1995) 1-4
doi:10.1016/0168-9002(94)01434-5

A. Comment, B. van den Brandt, K. Uffmann, F. Kurdzesau, S. Jannin, J.A. Konter, P. Hautle, W.Th. Wenckebach, R. Gruetter, J.J. van der Klink
Design and Performance of a DNP Prepolarizer coupled to a Rodent MRI Scanner
Concepts Magn. Reson. 31B (2007) 255-269
doi:10.1002/cmr.b.20099

W.Th. Wenckebach
The Solid Effect
Appl. Magn. Reson. 34 (2008) 227-235
doi:10.1007/s00723-008-0121-9

W.Th. Wenckebach
Dynamic Nuclear Polarization via Thermal Mixing: beyond the High Temperature Approximation
J. Magn. Res. 277 (2017) 68-78
10.1016/j.jmr.2017.01.020

W.Th. Wenckebach
Spectral Diffusion and Dynamic Nuclear Polarization: beyond the High Temperature Approximation
J. Magn. Res. 284 (2017) 104-114
10.1016/j.jmr.2017.10.001

Magnetic resonance saturation and relaxation

W.Th. Wenckebach, G.M. van den Heuvel, H. Hoogstraate, T.J.B. Swanenburg, N.J. Poulis
Experimental Proof of the Strong Coupling between the Electron Spin Reservoir and a Nuclear Spin System in Dilute Paramagnetic Salts
Phys. Rev. Lett. 22 (1969) 581-583
doi:10.1103/PhysRevLett.22.581

W.Th. Wenckebach, L.A.H. Schreurs, H. Hoogstraate T.J.B. Swanenburg, N.J. Poulis:
Distant ENDOR in Diluted Copper Tutton Salts
Physica 52 (1970) 455-480
doi.org/10.1016/0031-8914(71)90177-7

H. Hoogstraate, J. Poot, W.Th. Wenckebach, N.J. Poulis:
Cross Relaxation Measured by Pulsed ENDOR
Physica 79B (1975) 499-505
doi:10.1016/0378-4363(75)90003-0

G.M. van den Heuvel, R.J.J. Brak, L.S.J.M. Henkens, W.Th. Wenckebach, N.J. Poulis:
Proton Spin-Lattice Relaxation in Diluted Copper Tutton Salts
Physica 81B (1976) 53-70
doi.org/10.1016/0378-4363(76)90238-2

H. Hoogstraate, J. Poot, W.Th. Wenckebach, N.J. Poulis:
Cross Relaxation and Spin Thermodynamics in some Diluted Copper Tutton Salts
Physica 81B (1976) 71-83
doi:10.1016/0378-4363(76)90239-4

J.C.M Sprenkels, W.Th. Wenckebach, N.J. Poulis, S.F.J. Cox:
La Conservation du Moment Cinétique et le Mélange Thermique des Systèmes de Spin
C. R. Acad. Sc. Paris 285 (1977) 231-234

J. van Houten, W.Th. Wenckebach, N.J. Poulis:
Proton Spin-Lattice Relaxation in Deuterated Diluted Copper Tutton Salts
Physica 92B (1977) 201-209
doi:10.1016/0378-4363(77)90020-1

J. van Houten, W.Th. Wenckebach, N.J. Poulis:
A Study of the Thermal Contact between the Nuclear Zeeman System and the Electron Dipole-Dipole Interaction System
Physica 92B (1977) 210-220
doi.org/10.1016/0378-4363(77)90021-3

J. van Houten, W.Th. Wenckebach, N.J. Poulis:
Proton Concentration Dependence of the Proton Spin-Lattice Relaxation Time in Diluted Copper Tutton Salts
Physica 100B (1980) 35-50
doi:10.1016/0378-4363(80)90056-x

J. Poot, W.Th. Wenckebach, N.J. Poulis:
A Study of Cross Relaxation by Pulsed ENDOR. Part I: Theory
Physica 101B (1980) 329-353
doi:10.1016/0378-4363(80)90032-7

J. Poot, W.Th. Wenckebach, N.J. Poulis:
A Study of Cross Relaxation by Pulsed ENDOR. Part II: Experments
Physica 101B (1980) 354-363
doi:10.1016/0378-4363(80)90033-9

L.J. de Haas, W.Th. Wenckebach, N.J. Poulis:
Magnetic Resonance Saturation in Solids at Finite Temperatures
Physica 103A (1980) 295-315
doi.org/10.1016/0378-4371(80)90219-8

J. Poot, W.Th. Wenckebach, N.J. Poulis:
Proton Pulsed ENDOR Experiments in Deuterated Copper Tutton Salts
Physica 106B (1981) 368-387
doi.org/10.1016/0378-4363(81)90067-x

L.J. de Haas, W.Th. Wenckebach, N.J. Poulis:
Magnetic Resonance Saturation and Cross Relaxation at Low Temperature
Physica 111B (1981) 219-230
doi.org/10.1016/0378-4363(81)90099-1

L.J. de Haas, C.M.B. van der Zon, W.Th. Wenckebach, N.J. Poulis:
Spin-Lattice Relaxation at Low Temperatures in Ca(OH)2
Physica 123B (1983) 35-46
doi.org/10.1016/0378-4363(83)90008-6

G.D.F. van Velzen, W.Th. Wenckebach:
The Raman Electron Spin-Lattice Process for Diatomic Molecules I. Theory for Ca(OH)2:O2-
Physica 145B (1987) 85-100
doi.org/10.1016/0378-4363(87)90070-2

G.D.F. van Velzen, J.C.M. Sprenkels, J.C. Voorhoeve, C.H.M. Meyer, W. van Toledo, L. Korstanje, P. Box, W.Th. Wenckebach:
The Raman Electron Spin-Lattice Process for Diatomic Molecules II. Experiments in Ca(OH)2:O2-
Physica 145B (1987) 101-110
doi.org/10.1016/0378-4363(87)90071-4


Magnetic ordering of nuclear spins

J.-F. Jacquinot, W.Th. Wenckebach, M. Chapellier, M. Goldman, A. Abragam:
Ferromagnétisme Nucléaire
C. R. Acad. Sc. Paris 278 (1974) 93-96

J. Marks, W.Th. Wenckebach, N.J. Poulis:
Magnetic Ordering of Proton Spins in Ca(OH)2
Physica 96B (1979) 337-340
doi:10.1016/0378-4363(79)90019-6

J. Marks, J.C.M. Sprenkels, L.J. de Haas, W.Th. Wenckebach, N.J. Poulis:
The Onset of a Transverse Magnetic Ordering of Proton Spins in Ca(OH)2
Physica 109 & 110B (1982) 2155-2158
doi:10.1016/0378-4363(82)90267-4

J.C.M. Sprenkels, W.Th. Wenckebach, N.J. Poulis:
Ferromagnetic Ordering of the Proton Spins in Ca(OH)2
J. Phys. C: Solid State Phys. 15 (1982) L941-L947
doi.org/10.1088/0022-3719/15/26/012

J.C.M. Sprenkels, W.Th. Wenckebach, N.J. Poulis:
Ferromagnetic Ordering of the Proton Spins in Ca(OH)2 at Negative Spin Temperatures
J. Phys. C: Solid State Phys. 16 (1983) 4425-4445
doi.org/10.1088/0022-3719/16/22/017

J.C.M. Sprenkels, W.Th. Wenckebach, N.J. Poulis:
Transverse Helicoidal Ordering of the Proton Spins in Ca(OH)2 at Positive Spin Temperatures
J. Phys. C: Solid State Phys. 18 (1985) 421-441
doi:10.1088/0022-3719/18/2/020

W.Th. Wenckebach:
The Behaviour of Nuclear Spin Systems at Spin Temperatures below 1 μK
Physica 127BC (1984) 296-299
doi:10.1016/s0378-4363(84)80046-7

P.F.A. Verheij, W.Th. Wenckebach
Nuclear Magnetic Ordering in Fluorene
J. de Physique I 3 (1993) 2259-2267
doi.org/10.1051/jp1:1993243


DNP using photo-excited states

H.W. van Kesteren, W.Th. Wenckebach, J. Schmidt, N.J. Poulis
Dynamic Nuclear Polarization of Proton Spins via Photoexcited Triplet States: The System Phenanthrene in Fluorene
Chem. Phys. Lett. 89 (1982) 67-70
doi:10.1016/0009-2614(82)83344-7

H.W. van Kesteren, W.Th. Wenckebach, J. Schmidt:
Production of High, Long-Lasting, Dynamic Proton Polarization by way of Photoexcited Triplet States
Phys. Rev. Lett. 55 (1985) 1642-1644
doi:10.1103/physrevlett.55.1642

H.W. van Kesteren, W.Th. Wenckebach, J. Schmidt
The Mechanism of Microwave Induced Optical Nuclear Polarization in Fluorene doped with Phenanthrene: A Qualitative Analysis
Chem. Phys. Lett. 121 (1985) 440-445
doi:10.1016/0009-2614(85)87210-9

H.W. van Kesteren, W.Th. Wenckebach, J. Schmidt
The Mechanism of Microwave Induced Optical Nuclear Polarization in Fluorene doped with Phenanthrene: A Quantitative Analysis
Molecular Physics 58 (1986) 263-271
doi:10.1080/00268978600101131

H.W. van Kesteren, W.Th. Wenckebach, J.A.J.M. Disselhorst:
A 75 GHz Spectrometer for Microwave-Induced Optical Nuclear Polarization
J. Phys. E: Sci. Instrum 20 (1987) 648-652
doi:10.1088/0022-3735/20/6/015

A. Henstra, P. Dirksen, J. Schmidt, W.Th. Wenckebach
Nuclear Spin Orientation via Electron Spin Locking (NOVEL)
J. Magnetic Resonance 77 (1988) 389-393
doi:10.1016/0022-2364(88)90190-4

A. Henstra, P. Dirksen, W.Th. Wenckebach
Enhanced Dynamic Nuclear Polarization by the Integrated Solid Effect
Phys. Lett. 134A (1988) 134-136
doi:10.1016/0375-9601(88)90950-4

P. Dirksen, A. Henstra, W.Th. Wenckebach:
An Electron Spin Echo Study of Donor-Acceptor Recombination
J. Phys.: Condens. Matter 1 (1989) 7085-7092
doi.org/10.1088/0953-8984/1/39/020

P. Dirksen, A. Henstra, W.Th. Wenckebach:
An ESR Hole Burning Study of Dynamic Nuclear Polarisation of 29Si in Si:B
J. Phys.: Condens. Matter 1 (1989) 8535-8541
doi.org/10.1088/0953-8984/1/44/024

A. Henstra, T.-S. Lin, J. Schmidt, W.Th. Wenckebach:
High Dynamic Nuclear Polarization at Room Temperature
Chem. Phys. Lett. 165 (1990) 6-10
doi.org/10.1016/0009-2614(90)87002-9

D.J. van den Heuvel, A. Henstra, T.-S. Lin, J. Schmidt, W.Th. Wenckebach:
Transient Oscillations in Pulsed Dynamic Nuclear Polarization
Chem. Phys. Lett. 188 (1992) 194-200
doi:10.1016/0009-2614(92)90008-b

P.F.A. Verheij, W.Th. Wenckebach, J Schmidt:
Microwave Induced Optical Nuclear Polarization at 75 GHz: A quantitative analysis
Appl. Magn. Reson. 5 (1993) 187-205
doi:10.1007/BF03162521

D.J. van den Heuvel, J. Schmidt, W.Th. Wenckebach:
Polarizing Proton Spins by Electron-Spin Locking of Photo-Excited Triplet State Molecules
Chem. Phys. 187 (1994) 365-372
doi.org/10.1016/0301-0104(94)89018-8

A. Henstra, W.Th. Wenckebach
The Theory of Nuclear Orientation via Electron Spin Locking (NOVEL)
Mol. Phys. 106 (2008) 859-871
doi:10.1080/00268970801998262

M. Haag. B. van den Brandt, T.R. Eichhorn, P. Hautle, W.Th. Wenckebach
Spin Filtering Neutrons with a Proton Target Dynamically Polarized using Photo-Excited Triplet States
Nucl. Instr. Meth. Phys. Res. A678 (2012) 91-98
doi:10.1016/j.nima.2012.03.014

T.R. Eichhorn, M. Haag. B. van den Brandt, P. Hautle, W.Th. Wenckebach
High Proton Spin Polarization with DNP using the Triplet State of Pentacene-d14
Chem. Phys. Lett. 555 (2013) 296-299
doi:10.1016/j.cplett.2012.11.007

T.R. Eichhorn, M. Haag. B. van den Brandt, P. Hautle, W.Th. Wenckebach, S. Jannin, J.J. van der Klink, A. Comment
An Apparatus For Pulsed ESR and DNP Experiments Using Optically Excited Triplet States down to Liquid Helium Temperatures
J. Magn. Res. 234 (2013) 58-66
doi:10.1016/j.jmr.2013.06.009

A. Henstra, W.Th. Wenckebach
Dynamic Nuclear Polarization via the Integrated Solid Effect I: Theory
Mol. Phys. 112 (2014) 1761-1772
doi:10.1080/00268976.2013.861936

T.R. Eichhorn, B. van den Brandt, P. Hautle, A. Henstra, W. Th. Wenckebach
Dynamic Nuclear Polarisation Via the Integrated Solid Effect II: Experiments on Naphthalene-h8 doped with Pentacene-d14
Mol. Phys. 112 (2014) 1773-1782
doi:10.1080/00268976.2013.863405

T.R. Eichhorn, N. Niketic, B. van den Brandt, U. Filges, T. Panzner, E. Rantsiou, W.Th. Wenckebach, P. Hautle
Proton polarization above 70% by DNP using photo-excited triplet states, a first step towards a broadband neutron spin filter
Nucl. Inst. Meth. Phys. Res. A 754 (2014) 10-14
doi:10.1016/j.nima.2014.03.047

N. Niketic, B. van den Brandt, W.Th. Wenckebach, J. Kohlbrecher, P. Hautle
Polarization analysis in neutron small angle scattering with a novel triplet DNP spin filter.
J. Appl. Cryst. 48 (2015) 1514-1521
doi:10.1107/S1600576715015575


Miscellaneous papers on magnetic resonance

B. van den Brandt, W. Griffioen, W.Th. Wenckebach, K. Taconis, R. de Bruyn Ouboter
A Pomeranchuk Cell which is Precooled and Pressurized by a He4 cycling He3-He4 dilution Refrigerator
Cryogenics 22 (1982) 33-38
doi:10.1016/0011-2275(82)90019-4

R.T. Weber, J.A.J.M. Disselhorst, L.J. Prevo, J. Schmidt, W.Th. Wenckebach
Electron Spin-Echo Spectroscopy at 95 GHz
J. Magn. Res. 81 (1989) 129-144
doi:10.1016/0022-2364(89)90272-2

A. Henstra, T.-S. Lin, W.Th. Wenckebach
Muon Spin Rotation (μSR) Detected Electron Spin Echo Enveloppe Modulation (ESEEM)
Phys. Lett. 157A (1991) 431-434
doi:10.1016/0375-9601(91)90884-B

Last update: 21 November 2017