Technical data

K and L absorption edges of X-rays / Moseley's law and the Rydberg constant

Article no: P2541205

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Principle

Samples of various elements of different atomic numbers are irradiated with X-rays of a known spectral distribution. The energy of the transmitted intensities is analyzed using a monocrystal analyzer. Subsequently, the Rydberg constant and the screening constants are calculated from the energy of the absorption edges.

Tasks

Record the intensity of the X-rays emitted from the copper anode as a function of the Bragg angle using a LiF monocrystal as analyzer. Determine the K absorption edges of different absorber materials.
Calculate the Rydberg constant and the screening constants from the energy values of the K absorption edges.
Find the L absorption edges of different absorber materials.
Calculate the Rydberg constant from the energy values of the L absorption edges.

Learning objectives

X-ray Bremsstrahlung
Characteristic radiation
Bragg equation
Bohr's atomic model
Atomic energy level scheme
Moseley's law
Rydberg constant
Screening constant

Scope of delivery

XR 4.0 expert unit, 35 kV	09057-99	1
XR 4.0 X-ray goniometer	09057-10	1
XR 4.0 X-ray Plug-in with copper tube (Cu)	09057-51	1
XR 4.0 X-ray structural analysis upgrade set	09145-88	1
XR 4.0 X-ray Chemical set for edge absorption	09056-07	1
Silver nitrate, cryst. 25 g	30222-04	1