# Development of a 3-D energy-momentum analyzer for meV-scale energy electrons

## TL;DR

This paper presents a novel 3-D energy-momentum analyzer designed for precise measurement of low-energy electrons near the photoemission threshold, enabling advanced studies in photoemission physics.

## Contribution

The development of a time-of-flight based analyzer capable of measuring 3-D momentum and energy distributions of electrons with meV-scale energies and sub-meV resolution.

## Key findings

- Achieved energy resolution below 1 meV.
- Capable of measuring electrons with energies down to 1 meV.
- Suitable for studying photoemission processes near the threshold.

## Abstract

In this article, we report on the development of a time-of-flight based electron energy analyzer capable of measuring the 3-D momentum and energy distributions of very low energy (meV-scale) photoemitted electrons. This analyzer is capable of measuring energy and 3-D momentum distributions of electrons with energies down to 1 meV with a sub-meV energy resolution. This analyzer is an ideal tool for studying photoemission processes very close to the photoemission threshold and also for studying the physics of photoemission based electron sources.

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Source: https://tomesphere.com/paper/1904.02678