Published by De Gruyter

Volume 49 Issue 1-2

Issue of Zeitschrift für Naturforschung A

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Journal Overview

Publicly Available June 2, 2014

Titelei

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Open Access June 2, 2014

Preface

D. Brinkmann, R. J. C. Brown, P. C. Schmidt

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Open Access June 2, 2014

The story of the frustrated NQR physicist

It is shown that, due to the hyperfine interaction between the electron and the positron, positronium atoms in a crystal can acquire an effective quadrupole moment and a tensor polarizability. In such a case the effective quadrupolar interaction with intracrystalline fields leads to a quadrupolar splitting of the triplet level of positronium and also to an anisotropy of its magnetic quenching in the presence of an external magnetic field. The possibilities of observating this anisotropy experimentally are discussed.

About this journal

Objective
A Journal of Physical Sciences: Zeitschrift für Naturforschung A (ZNA) is an international scientific journal which publishes original research papers from all areas of experimental and theoretical physics. Authors are encouraged to pay particular attention to a clear exposition of their respective subject, addressing a wide readership. In accordance with the name of our journal, which means “Journal for Natural Sciences”, manuscripts submitted to ZNA should have a tangible connection to actual physical phenomena. In particular, we welcome experiment-oriented contributions.

Manuscripts considered for publication in A Journal of Physical Sciences: Zeitschrift für Naturforschung A undergo high-level refereeing. Mere formal correctness of a paper is not sufficient for its acceptance. Moreover, articles reporting a merely marginal extension of already existing knowledge are considered unsatisfactory. Instead, the key quality a publication in A Journal of Physical Sciences: Zeitschrift für Naturforschung A should possess is that it makes a genuine contribution to the advancement of its topic.

Topics

Atomic, Molecular & Chemical Physics
Dynamical Systems & Nonlinear Phenomena
Gravitation & Cosmology
Hydrodynamics
Quantum Theory
Solid State Physics & Materials Science
Thermodynamics & Statistical Physics

Article formats
Original research articles, research notes, letters and review articles from all areas of theoretical and experimental physics

Information on submission process

Volume 49 Issue 1-2

Issue of Zeitschrift für Naturforschung A

Titelei

Preface

The story of the frustrated NQR physicist

Low Frequency Nuclear Quadrupole Resonance with SQUID Amplifiers

Abstract

Determination of the Sign of Nuclear Quadrupole Interaction by Laser-Radiofrequency Double-Resonance Determination of the Sign of Nuclear Quadrupole Interaction by Laser-Radiofrequency Double-Resonance

Abstract

Wideline 2H -NMR Spectroscopy and Imaging of Solids

Abstract

β-Radiation Detected NMR in Solid and Liquid Neon

Abstract

1H -14N Nuclear Quadrupole Double Resonance with Multiple Frequency Sweeps

Abstract

On the Reconstruction of NQR Nutation Spectra in Solids with Powder Geometry

Abstract

Automatically Tuned Probe Head System for Pulsed NQR Spectroscopy in Extreme Thermodynamic Conditions

Abstract

Investigation of Intrinsic Point Defects in Metals by Nuclear Quadrupole Double Resonance

Abstract

A New Pulsed Nuclear Quadrupole Resonance Spectrometer

Abstract

Theory of NQR Pulses

Abstract

Numerical Simulation of Magnetic Resonance Experiments: Concepts and Applications to Static, Rotating and Double Rotating Experiments

Abstract

Solomon Echoes Extended to Soft Pulse Excitation

Abstract

Nitrogen-14 NQR Multiple-Pulse Spin-locking in the Axial Electric Field Gradient

Abstract

Calculation of Quadrupole Coupling Constants: From Gas to Liquid

Abstract

Theoretical Investigation on the Nuclear Quadrupole Interaction of CH3Cl, CH2Cl2 and CHCl3

Abstract

Sternheimer Factors and Electric-Field-Gradient Hyperpolarisabilities for Ions in Crystals

Abstract

The Breathing Mode of BaBiO3: Electric Field Gradient and Total Energy Calculations

Abstract

A Theoretical Study of the Vibrational Dependence of the Nuclear Quadrupole Coupling Constants of some Diatomic Molecules

Abstract

Quadrupole Coupling Assignments in Inorganic Periodic Systems by ab initio Calculation of Electric Field Gradients

Abstract

Quadrupole Coupling in some H-bonded Organic Systems by ab initio Lattice Calculations of Electric Field Gradients

Abstract

The Nuclear Quadrupole Resonance of the 63, 65Cu Nuclei in Copper (I) Complexes

Abstract

A 35Cl NQR and MNDO study of 3,5-dichloro-1,2,4-triazole and its ionic forms

Abstract

35Cl NQR of 1,5,2-Diazaphosphorine Derivatives

Abstract

Halogen NQR and Crystal Structure of Ammonium Halides (R-NH3)+X- and (X–) (+H3NR´­NH3+) (X–). R = (HOCH2)3C, R´ = CH2C(CH3)2CH2; X = I,Br

Abstract

Structure and Bonding of Bromoantimonate (III) Complexes with Unusual Valency by Means of NQR and Powder X-Ray Diffraction

Abstract

Crystal Structure and NQR of Two Copper (I) Complexes of 4,6-Dimethylpyrimidine-2-thione

Abstract

63,65Cu and 79,81Br NQR Studies of Halogenocuprate Complexes of Triphenylphosphine

Abstract

81Br NQR and Crystal Structure of Ethylammonium Tribromomercurate(II), CH3CH2NH3HgBr3

Abstract

81Br NQR for Uncoordinated Br ions in trans-[CoBr2(en)2][H5O2]Br2 and trans-[CoBr2(en)2] [D5O2]Br2

Abstract

Bromine NQR and Crystal Structures of Tetraanilinium Decabromotricadmate and 4-Methylpyridinium Tribromocadmate

Abstract

Tetraguanidium Hexabromocadmate, [C(NH2)3]4[CdBr6]. Crystal Structure and Bromine Nuclear Quadrupole Resonance

Abstract

Effect of Deuteration on the Phase Transitions and on the Critical Dynamics in Ammonium Hexachlorometallates

Abstract

Ionic Dynamics in Plastic Crystal KNO2 Studied by 39K and 15N NMR

Abstract

Structural Phase Transition of N,N-Dimethylnitramine as Studied by 14N Nuclear Quadrupole Resonance

Abstract

Successive Phase Transitions and High Ionic Conductivity of Trichlorogermanate (II) Salts as Studied by 35C1 NQR and Powder X-Ray Diffraction

Abstract

Phase Transitions in 4,4´-Dichlorobenzophenone as Studied by 35Cl FT-NQR

Abstract

Inequivalent Reorientation of the Trichloromethyl Groups in 1,4-Bis(TrichloromethyI) Benzene as Studied by Pulsed 35Cl NQR

Abstract

35Cl NQR Relaxation and Hydrogen Bond in Some Chloral Hemiacetals

¹H -¹⁴N Nuclear Quadrupole Double Resonance with Multiple Frequency Sweeps

Theoretical Investigation on the Nuclear Quadrupole Interaction of CH₃Cl, CH₂Cl₂ and CHCl₃

The Breathing Mode of BaBiO₃: Electric Field Gradient and Total Energy Calculations

The Nuclear Quadrupole Resonance of the ^{63, 65}Cu Nuclei in Copper (I) Complexes

A ³⁵Cl NQR and MNDO study of 3,5-dichloro-1,2,4-triazole and its ionic forms

³⁵Cl NQR of 1,5,2-Diazaphosphorine Derivatives

Halogen NQR and Crystal Structure of Ammonium Halides (R-NH₃)⁺X^- and (X^–) (⁺H₃NR´NH₃⁺) (X^–). R = (HOCH₂)₃C, R´ = CH₂C(CH₃)₂CH₂; X = I,Br

^63,65Cu and ^79,81Br NQR Studies of Halogenocuprate Complexes of Triphenylphosphine

⁸¹Br NQR and Crystal Structure of Ethylammonium Tribromomercurate(II), CH₃CH₂NH₃HgBr₃

⁸¹Br NQR for Uncoordinated Br ions in trans-[CoBr₂(en)₂][H₅O₂]Br₂ and trans-[CoBr₂(en)₂] [D₅O₂]Br₂

Tetraguanidium Hexabromocadmate, [C(NH₂)₃]₄[CdBr₆]. Crystal Structure and Bromine Nuclear Quadrupole Resonance

Ionic Dynamics in Plastic Crystal KNO₂ Studied by ³⁹K and ¹⁵N NMR

Structural Phase Transition of N,N-Dimethylnitramine as Studied by ¹⁴N Nuclear Quadrupole Resonance

Phase Transitions in 4,4´-Dichlorobenzophenone as Studied by ³⁵Cl FT-NQR

Inequivalent Reorientation of the Trichloromethyl Groups in 1,4-Bis(TrichloromethyI) Benzene as Studied by Pulsed ³⁵Cl NQR

³⁵Cl NQR Relaxation and Hydrogen Bond in Some Chloral Hemiacetals

³⁵Cl NQR Spin-Lattice Relaxation Mechanism in Ni(H₂O)₆SnCl₆ and Mg(H₂O)₆SnCl₆ Crystals

Ionic motion and Disordered Structure in the Rotator Phase of Butylammonium Chloride Studied by Temperature Dependences of ³⁵Cl and ²H NMR

Low Temperature Isotope Effect in Ammonium Hexachloroselenate(IV) Studied by ³⁵Cl NQR

¹⁷O Quadrupole Dips in Ammonium Persulphate

Systematic Investigation of MF₃ Crystalline Compounds (M = Al, Cr, Fe, Ga, In, Sc, Ti, and V) and Fe_1-xM_xF₃ Mixed Series (M = Ga, Cr, V)

Dehydration of Solid SnCl₂(OH₂)· H₂O to SnCl₂

⁴³Ca NMR Study of Bismuth-Based High-T^c Superconductors

The Energy Dispersion of the Chain Band in YBa₂Cu₃O_6+x and Its Effect on the Cu(2) NQR Frequency

Internal Magnetic Field at Ba Site in Antiferromagnetic YBa₂Cu₃O₆ Determined by ¹³⁷Ba NQR

Nuclear Quadrupole Resonance Study of Copper in Electron-Irradiated YBa₂Cu₃O_6.95

Calculated Spin-lattice Relaxation of ¹⁰³Ru Compared with Low Temperature Quadrupole Orientation Measurements

Hydrogen-doped Antiferromagnetic YBa₂Cu₃O_7-δH_x as Studied by Proton NMR and Cu NQR

²⁰⁹Bi NQR Powder Spectra Influenced by Local and Applied Magnetic Fields

Investigation of the Phase Transition at 67.17 K in the Thiourea-CCl₄ Inclusion Compound. As Studied by ¹⁴N NQR