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The de Broglie Wavelength02:32

The de Broglie Wavelength

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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Related Experiment Video

Updated: Jul 9, 2025

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
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Dephasingless laser wakefield acceleration in the bubble regime.

Kyle G Miller1, Jacob R Pierce2, Manfred V Ambat3

  • 1Laboratory for Laser Energetics, University of Rochester, Rochester, NY, 14623-1299, USA. kmill@lle.rochester.edu.

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Summary

A novel space-time structured laser pulse enables dephasingless laser wakefield acceleration, overcoming limitations of conventional methods. This breakthrough promises compact, high-energy electron acceleration for future colliders and light sources.

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Area of Science:

  • Plasma Physics
  • Particle Accelerators
  • Laser Technology

Background:

  • Laser wakefield accelerators (LWFAs) offer higher electric fields than conventional accelerators.
  • Dephasing limits energy gain in single-stage LWFAs as particles outrun the wakefield.
  • Next-generation light sources and lepton colliders require compact, high-energy accelerators.

Purpose of the Study:

  • To demonstrate a dephasingless laser wakefield acceleration method using a single space-time structured laser pulse.
  • To achieve electron acceleration over extended distances beyond the dephasing length.
  • To improve beam quality and projected energy gains in LWFAs.

Main Methods:

  • Utilizing a single, space-time structured laser pulse for ionization injection and electron acceleration.
  • Simulating a dephasingless laser wakefield accelerator in the bubble regime.
  • Employing a programmable-trajectory focus for the laser pulse, including accelerating focus and reduced spot-size variation.

Main Results:

  • Demonstrated electron acceleration over 20 dephasing lengths (1.3 cm) to 2.1 GeV with 25 pC charge using a 6.2-J pulse.
  • Stabilized electron acceleration through focus manipulation, mitigating self-focusing and improving beam quality.
  • Projected energy gains of 125 GeV in a single, sub-meter stage with a 500-J pulse.

Conclusions:

  • A single space-time structured laser pulse can overcome dephasing limitations in LWFAs.
  • This technique enables efficient, high-energy electron acceleration in a compact, single-stage device.
  • The method holds significant potential for developing advanced light sources and lepton colliders.