NEUTRON DIFFRACTOMETER with a Position Sensitive Detector system

Instrument responsibles: Margit Fábián, István Tolnai

Video introduction (short, longer)

Instrument description: The PSD neutron diffractometer is dedicated to atomic structure investigations of amorphous materials, liquids and crystalline materials with moderate resolution requirements. PSD is a 2-axis diffractometer equipped with a linear position-sensitive detector system. The detector assembly is mounted on the diffractometer arm and it spans a scattering angle range of 25° at a given detector position. The entire diffraction spectrum can be measured in five steps.

The detector system of PSD and its digital electronics was made in Studsvik NFL (Sweden). The detector system is based on three 3He-filled linear position sensitive Reuter-Stokes detectors (610 mm in length, 25 mm in diameter). The three detectors are placed above each other within the scattering plane. The dedicated electronics serves for electronic motion control and data transfer between the diffractometer and the computer.

A high temperature in-situ cell (for RT to 350°C) is available at the PSD diffractometer. 

In publications, please refer to PSD as:
Sváb, E., Mészáros, G., & Deák, F. (1996). Neutron powder diffractometer at the Budapest research reactor. Materials Science Forum228-231(PART 1), 247-252.

PSD neutron diffractometer (PSD) at the Budapest Neutron Centre - poster


Table 1. Characteristic features of the PSD neutron diffractometer for two actual arrangements


Fig 1

             Figure 1.  Schematic view of the PSD neutron diffractometer

psd SAMPLE PSD in situ cell








                                                                                     Pictures of the PSD neutron diffractometer