Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Collection
For ¥0.57 per day, unlimited downloads CREATE MEMBERSHIP Download

toTop

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

home > search >

Ultra-intense gamma-rays created using the Texas Petawatt Laser

Author:
Henderson, Alexander   Liang, Edison   Riley, Nathan   Yepes, Pablo   Dyer, Gillis   Serratto, Kristina   Shagin, Petr  


Journal:
High Energy Density Physics


Issue Date:
2014


Abstract(summary):

In a series of experiments at the Texas Petawatt Laser (TPW) in Austin, TX, we have used attenuation spectrometers, dosimeters, and a new Forward Compton Electron Spectrometer (FCES) to measure and characterize the angular distribution, flux, and energy spectrum of the X-rays and gamma rays produced by the TPW striking multi-millimeter thick gold targets. Our results represent the first such measurements at laser intensities >= 10(21) W x cm(-2) and pulse durations <= 150 fs. We obtain a maximum yield of X-ray and gamma ray energy with respect to laser energy of 4% and a mean yield of 2%. We further obtain a Full Width Half Maximum (FWHM) of the gamma angular distribution of 33 degrees. We were able to characterize the gamma-ray spectrum from 3 MeV to 50 MeV using a Forward Compton Electron Spectrometer, with an energy resolution of 10-15% and mean bremsstrahlung effective kT of similar to 6 MeV. We were able to characterize the spectrum from 1 to 5 MeV using a Filter Stack (attenuation) Spectrometer, measuring a mean X-ray temperature for the spectrum from 3 to 5 MeV of 2.1 MeV, suggesting that the low-energy gammas are bremsstrahlung from secondary electrons. (C) 2014 Elsevier B.V. All rights reserved.


Page:
46-56


VIEW PDF

The preview is over

If you wish to continue, please create your membership or download this.

Create Membership

Similar Literature

Submit Feedback

This function is a member function, members do not limit the number of downloads