
# Slot: beam_convergence

Refers to how tightly or widely the electron beam is focused onto the sample, in mrad. Typically low convergence for TEM and high for STEM.

URI: [https://w3id.org/oscem-schemas/latest/subtomo/Instrument_beam_convergence](https://w3id.org/oscem-schemas/latest/subtomo/Instrument_beam_convergence)


## Domain and Range

[Instrument](Instrument.md) &#8594;  <sub>0..1</sub> [QuantitySI](QuantitySI.md)

## Parents

 *  is_a: [beam_convergence](beam_convergence.md)

## Children


## Used by

 * [Instrument](Instrument.md)
