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Measurement of the 40Ar(e,e′) elastic scattering cross section with a novel gas-jet target

  • M. Littich
  • , L. Doria
  • , P. Brand
  • , P. Achenbach
  • , S. Aulenbacher
  • , S. Bacca
  • , J. C. Bernauer
  • , M. Biroth
  • , D. Bonaventura
  • , D. Bosnar
  • , M. Christmann
  • , E. Cline
  • , A. Denig
  • , M. Distler
  • , A. Esser
  • , I. Friščić
  • , J. Geimer
  • , P. Gülker
  • , M. Hoek
  • , P. Klag
  • A. Khoukaz, M. Lauß, S. Lunkenheimer, T. Manoussos, D. Markus, H. Merkel, M. Mihovilovič, U. Müller, J. Pochodzalla, B. S. Schlimme, C. Sfienti, J. E. Sobczyk, S. Stengel, E. Stephan, M. Thiel, S. Vestrick, A. Wilczek, L. Wilhelm

Research output: Contribution to journalArticlepeer-review

Abstract

We report on a measurement of elastic electron scattering on argon performed with a novel cryogenic gas-jet target at the Mainz Microtron accelerator MAMI. The luminosity is estimated with the thermodynamical parameters of the target and by comparison to a calculation in distorted-wave Born approximation. The cross section, measured at new momentum transfers of 1.24 fm-1 and 1.55 fm-1 is in agreement with previous experiments performed with a traditional high-pressure gas target, as well as with modern ab-initio calculations employing state-of-the-art nuclear forces from chiral effective field theory. The nearly background-free measurement highlights the optimal properties of the gas-jet target for elements heavier than hydrogen, enabling new applications in hadron and nuclear physics.

Original languageEnglish
Article number152
JournalEuropean Physical Journal A
Volume61
Issue number7
DOIs
StatePublished - Jul 2025

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