Use of Electron Beam Gun for Hard Rock Excavation

Abstract

A 36 kW electron beam gun is being readied for field test (not funded by the contract). A design has been developed for the gun support or carriage, and preliminary fabrication has started. The Logan Quarry in Aromas, California, has been tentatively selected as the field test site. A mathematical model that can describe the piercing of the rock by the electron beam and subsequently produced thermal stresses is under development. Laboratory tests involving vertical piercing with a 9 kW gun have been conducted in gabbro, sandstone, and quartzite. The results are in good agreement with the prediction of the cavity model developed in theoretical studies. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1971
Accession Number
AD0732452

Entities

People

  • Berthold W. Schumacher
  • David R. Nixon

Organizations

  • Westinghouse Electric Corporation

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adiabatic Conditions
  • Electron Beams
  • Electron Guns
  • Energy
  • Equations
  • Failure Mode And Effect Analysis
  • Field Tests
  • Heat Energy
  • Heat Of Vaporization
  • Heat Transmission
  • Laboratory Tests
  • Mathematical Models
  • Power Supplies
  • Public Health
  • Radiation Shielding
  • Test And Evaluation
  • X Rays

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Seismology
  • ballistics.

Technology Areas

  • Directed Energy
  • Microelectronics