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

S Karkare; J Feng; J Maxson; H A Padmore

doi:10.1063/1.5091683

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

Rev Sci Instrum. 2019 May;90(5):053902. doi: 10.1063/1.5091683.

Authors

S Karkare¹, J Feng², J Maxson³, H A Padmore⁴

Affiliations

¹ Department of Physics, Arizona State University, Tempe, Arizona 85282, USA.
² Lawrence Berkeley Lab, Berkeley, California 94520, USA.
³ Cornell Laboratory for Accelerator-Based Sciences and Education, Cornell University, Ithaca, New York 14853, USA.
⁴ Advanced Light Source Division, LBNL, Berkeley, California 94720, USA.

PMID: 31153267
DOI: 10.1063/1.5091683

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 (millielectronvolt-scale) photoemitted electrons. This analyzer is capable for measuring energy and 3-D momentum distributions of electrons with energies down to 1 meV with a sub-millielectronvolt 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.