LWFA Dephasing Length
Estimate LWFA dephasing length from plasma and laser wavelengths.
Description
An LWFA dephasing estimate scales plasma wavelength cubed by laser wavelength squared.
An LWFA dephasing estimate scales plasma wavelength cubed by laser wavelength squared. It describes a particular reduced propagation model.1
Estimate LWFA dephasing length from plasma and laser wavelengths.
When to use LWFA Dephasing Length
Use this tool to estimate LWFA dephasing length from plasma and laser wavelengths.
Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
How to use LWFA Dephasing Length and understand its results
- Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
- Enter plasmaWavelengthMeters, laserWavelengthMeters using the field table and calculation rules, then run the tool.
- Read dephasingLengthMeters, dephasingCycles. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| plasmaWavelengthMeters | Plasma wavelength (m) | number; minimum: 0 | Required |
| laserWavelengthMeters | Laser wavelength (m) | number; minimum: 0 | Required |
Enter positive wavelengths in meters. Return dephasing length and its count of plasma periods.
length=λplasma³/(2λlaser²); cycles=length/λplasma Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| dephasingLengthMeters | Estimated dephasing length (m) | number; minimum: 0 |
| dephasingCycles | Dephasing length in plasma wavelengths | number; minimum: 0 |
{
"input": {
"plasmaWavelengthMeters": 2,
"laserWavelengthMeters": 1
},
"output": {
"dephasingLengthMeters": 4,
"dephasingCycles": 2
}
}Limitations and assumptions
No density evolution, pump depletion, bubble geometry or full acceleration simulation is performed.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Wakefield Gradient Comparison: Calculate wakefield energy gain and compare the gradient with a supplied reference. For a complementary task, use Inverse-Compton Photon Energy: Estimate low-recoil head-on inverse-Compton backscatter photon energy as 4γ²E.
References
-
LWFA Dephasing Length — tool.io
Similar or alternative tools
- Wakefield Gradient Comparison
Calculate wakefield energy gain and compare the gradient with a supplied reference.
- Inverse-Compton Photon Energy
Estimate low-recoil head-on inverse-Compton backscatter photon energy as 4γ²E.