Medición de difracción para la determinación de intensidadde reflejos de Debye-Scherrer en una muestra de polvo cúbica (geometría Bragg-Brentano)

Num.Producto: P2542601

Principle

A polycrystalline, cubic face-centered crystallizing powder sample is irradiated with the radiation from a Roentgen tube with a copper anode. A Geiger-Mueller counter tube is automatically swivelled to detect the radiation that is constructively reflected from the various lattice planes of the crystallites. The Bragg diagram is automatically recorded. The intensities of the individual reflex lines are determined and compared with those theoretically expected. In addition, the evaluation allows the Bragg reflexes to be assigned to the individual lattice planes, and both their spacing and the corresponding Bravais lattice type to be determined.

Tasks

  1. Record the intensity of the Cu X-rays back scattered by a cubic crystallizing copper powder sample as a function of the scattering angle.
  2. Calculate the lattice plane spacings from the angle positions of the individual Bragg lines.
  3. Assign the Bragg reflexes to the respective lattice planes. Calculate the lattice constant of the substance and the Bravais lattice type.
  4. Determine the intensity of the individual reflex lines and compare them with the theoretically expected intensities.
  5. Determine the number of atoms in the unit cell.

What you can learn about

  • Crystal lattices
  • Crystal systems
  • Bravais-lattice
  • Reciprocal lattice
  • Miller indices
  • Structure factor
  • Atomic scattering factor
  • Lorentz-polarization factor
  • Multiplicity factor
  • Debye-Waller factor
  • Absorption factor
  • Bragg scattering
  • Characteristic X-rays
  • Monochromatization of X-rays

Lista de material (extracto) Producto Cantidad
XR 4.0 Unidad de rayos X, 35 kV 09057-99 1
X-ray MODULO ENCHUFABLE CON TUBO DE RAYOS X DE COBRE 09057-51 1
XR 4.0 X-ray goniometro 09057-10 1
XR 4.0 Software measure X-ray 14414-61 1
Tubo contador Geiger-Mueller tipo B 09005-00 1
CRISTAL FLUORO DE LITIO 09056-05 1
X-ray SOPORTE UNIVERSALO DE CRISTALES PARA UNIDAD DE RAYOS X 09058-02 1
TUBO D.DIAFRAGMA C.LAMINA D.NI 09056-03 1
XR 4.0 X-ray TUBO D.DIAFRAGMA d = 2 mm 09057-02 1
X-ray SUPPORTE PARA MUESTRAS DE POLVO (DIFRACTOMETRIA) 09058-09 1
Cable de datos USB, hembra tipo A/B, 1,8 m 14608-00 1
COBRE, POLVO 100 G 30119-10 1
VASELINA, 100G 30238-10 1
Microespátula de acero inoxidable, l=150 milímetros 33393-00 1

A continuación la literatura para este producto

Título Producto Idioma
Handbuch Lehrerversuche mit Röntgenstrahlung für die XR 4.0 expert unit, TESS expert Physik 01200-01 DEU
TESS expert Physics Handbook X-ray Experiments for XR 4.0 expert unit 01200-02 ENG
XRS 4.0 X-ray Strukturanalyse Erweiterungsset 09140-88

regresar a la lista correspondiente

Product No: P2542601

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