General description

PRISM: 2-axis polarised neutron reflectometer

  

Position

 

 

 

 

Beam tube

Cold neutron guide G2

 

 

Monochromator

 

Type

Monochromating supermirror

 

Incident wavelength

0.4 nm

 

Resolution

Dl/l = 0.05

 

Type of instrument

2-axis

horizontal scattering

 

 

Polarisers

 

Type

Polarising supermirrors

 

Flipper

Mezei type

 

 

Sample

 

Max. flux at specimen

5.105 n/s.cm²

For dq = 0.03°

Beam height

15 mm

 

Angular resolution

from 0.01° to 0.06°

 

Angular range

0.2° to 120°

At 300K

 

0.2° to 15°

At 4K

Dynamic range

105 to 106

1 cm² sample (8 hours full analysis scan; dq = 0.05°)

 

Detection

 

He3 detector

 

 

Background

1 count/10 min

Beam opened

 

 

 

XY multidetector

 

Avail. Dec. 1999

Type

microstrip

 

Background

 

 

 

Ancillary equipment

 

Field

0-1.2 T rotating field

From 77K to 300K

 

7 T (horizontal along the beam)

Available (Dec. 1999)

Cryostat

4K-300K (2 T)

 

 

 


LABORATOIRE LEON BRILLOUIN (CEA/CNRS) mise à jour : 30/07/99