Neutron optics and magnetic heterostructures

1.

JOINT INSTITUTE FOR NUCLEAR RESEARCH
Laboratory of Neutron Physics. THEM. Frank
NEUTRON OPTICS AND MAGNETIC HETEROSTRUCTURES
Zhaketov Vladimir
February 29, 2024.

2.

REPORT PLAN
1. Reflectometry
2. Reflectometry of polarized neutrons
3. Elements of a Polarized Neutron Reflectometer
4. Application examples of polarized neutron reflectometry
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3.

1. Reflectometry
2. Reflectometry of polarized neutrons
3. Elements of a Polarized Neutron Reflectometer
4. Application examples of polarized neutron reflectometry
3 / 57

4.

Reflectometric experiment
Reflectometry (from Latin reflecto - reflect and Greek metreo - measure) - a set of methods for
studying flat interfaces between media by analyzing beams of molecules, atoms, particles or el.magnets reflected from the boundary under study. radiation.
(Physical Encyclopedia)
detector
q
2
diaphragm
sample
4
q k r ki
sin
q : transmitted wave vector
2 θ : scattering angle
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5.

Specular reflection and refraction
mirror reflection
incident wave
Media 1: n 1
1
Media 2: n 2
r
2
refracted beam
Mirror reflection :