| Issue |
J. Phys. Colloques
Volume 33, Number C2, Avril 1972
2e CONGRÈS EUROPÉEN DE FERROÉLECTRICITÉ
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|---|---|---|
| Page(s) | C2-83 - C2-84 | |
| DOI | https://doi.org/10.1051/jphyscol:1972224 | |
2e CONGRÈS EUROPÉEN DE FERROÉLECTRICITÉ
J. Phys. Colloques 33 (1972) C2-83-C2-84
DOI: 10.1051/jphyscol:1972224
1 Comitato Nazionale per l'Energia Nucleare, Ispra (Varese), Italy
2 Institute of Experimental Physics, University of Warsaw, Warsaw, Poland
3 Istituto di Fisica Sperimentale del Politecnico di Torino, Torino, Italy.
J. Phys. Colloques 33 (1972) C2-83-C2-84
DOI: 10.1051/jphyscol:1972224
INCOHERENT NEUTRON SCATTERING FROM HYDROGEN BOND IN KDP AND ADP
M. ANTONINI1, I. SOSNOWSKA2 and M. VADACCHINO31 Comitato Nazionale per l'Energia Nucleare, Ispra (Varese), Italy
2 Institute of Experimental Physics, University of Warsaw, Warsaw, Poland
3 Istituto di Fisica Sperimentale del Politecnico di Torino, Torino, Italy.
Abstract
Neutron interference effects, already observed by Stiller and Grimm et al., are further examined in KH2PO4 (KDP) and NH4H2PO4 (ADP) in the paraelectric phase. The measurements are performed with a triple axis spectrometer at a neutron energy of 84 meV. A maximum value of 12 A-1 is achieved for the scattering vector k. For KDP, in the adopted geometry, k rotates in the plane defined by the vectors b + a and c of the single crystal. A preliminary experimental evidence for a similar interference effect observed also in the ADP crystal, is reported.