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Title: Single-electron detection and spectroscopy via relativistic cyclotron radiation

Journal Article · · Physical Review Letters
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  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. National Radio Astronomy Observatory, Charlottesville, VA (United States)
  3. Univ. of California, Santa Barbara, CA (United States)
  4. Univ. of Washington, Seattle, WA (United States)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  6. Karlsruhe Inst. of Technology (KIT), Karlsruhe (Germany)

It has been understood since 1897 that accelerating charges should emit electromagnetic radiation. Cyclotron radiation, the particular form of radiation emitted by an electron orbiting in a magnetic field, was first derived in 1904. Despite the simplicity of this concept, and the enormous utility of electron spectroscopy in nuclear and particle physics, single-electron cyclotron radiation has never been observed directly. Here we demonstrate single-electron detection in a novel radiofrequency spectrometer. We observe the cyclotron radiation emitted by individual electrons that are produced with mildly-relativistic energies by a gaseous radioactive source and are magnetically trapped. The relativistic shift in the cyclotron frequency permits a precise electron energy measurement. Precise beta electron spectroscopy from gaseous radiation sources is a key technique in modern efforts to measure the neutrino mass via the tritium decay endpoint, and this work is a proof-of-concept for future neutrino mass experiments using this technique.

Research Organization:
Univ. of California, Santa Barbara, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
Project 8 Collaboration
Grant/Contract Number:
SC0004036; FG02-97ER41020; SC0011091; AC05-76RL01830
OSTI ID:
1332971
Alternate ID(s):
OSTI ID: 1178479; OSTI ID: 1191786
Report Number(s):
PNNL-SA-104834; PRLTAO
Journal Information:
Physical Review Letters, Vol. 114, Issue 16; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (20)

Review of absolute neutrino mass measurements journal November 2018
Determining the neutrino mass with cyclotron radiation emission spectroscopy—Project 8 journal March 2017
Kassiopeia: a modern, extensible C++ particle tracking package journal May 2017
Locust: C++ software for simulation of RF detection journal November 2019
A White Paper on keV sterile neutrino Dark Matter journal January 2017
Direct Neutrino Mass Experiments journal May 2016
Working principle and demonstrator of microwave-multiplexing for the HOLMES experiment microcalorimeters journal October 2019
The electron capture in 163Ho experiment – ECHo journal June 2017
The Use of Low Temperature Detectors for Direct Measurements of the Mass of the Electron Neutrino journal January 2016
Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects journal October 2018
Locust: C++ software for simulation of RF detection text January 2019
The electron capture in 163Ho experiment – ECHo text January 2017
A White Paper on keV sterile neutrino Dark Matter text January 2017
Direct Neutrino Mass Experiments text January 2016
Kassiopeia : a modern, extensible C++ particle tracking package text January 2017
The electron capture in $^{163}$Ho experiment – ECHo text January 2017
The use of low temperature detectors for direct measurements of the mass of the electron neutrino text January 2015
A White Paper on keV Sterile Neutrino Dark Matter text January 2016
Direct Neutrino Mass Experiments text January 2016
Working principle and demonstrator of microwave-multiplexing for the HOLMES experiment microcalorimeters text January 2019

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