Observation of a Narrow Spectral Bandwidth in Proton Beam with High Energy Conversion Efficiency Driven by an Ultrashort High-Intensity Ti:Sapphire Laser

Author

Choi, Il Woo ; Tae Jun Yu ; Sung, Jae Hee ; Kim, Hyung Taek ; Jeong, Tae Moon ; Hong, Kyung-Han ; Young-Chul Noh ; Ko, Do-Kyeong ; Lee, Jongmin ; Sagisaka, Akito ; Yogo, Akifumi ; Orimo, Satoshi ; Ogura, Koichi ; Li, Zhong ; Pirozhkov, Alexander ; Daido,

Author_Institution

Adv. Photonics Res. Inst., GIST, Gwangju

fYear

2007

fDate

26-31 Aug. 2007

Firstpage

1

Lastpage

2

Abstract

Energetic protons with energies as high as 2.4 MeV and energy conversion efficiency from laser to proton of >1.4% are produced by focusing an ultrashort high-intensity Ti:sapphire laser pulse. We observe a narrow bandwidth structure in the proton spectra having a small energy spread with full width at half maximum of about 7% of its absolute value near 1.9 MeV by using a collimator in front of proton energy spectrometer.

Keywords

aluminium compounds; high-speed optical techniques; laser beam effects; proton beams; proton production; titanium; Al₂O₃:Ti; energetic proton; high energy conversion efficiency; narrow spectral bandwidth; proton beam; proton energy spectrometer; ultrashort high-intensity laser; Bandwidth; Energy conversion; Laser beam cutting; Laser theory; Optical pulse generation; Optical pulses; Particle beams; Protons; Space vector pulse width modulation; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on

Conference_Location

Seoul

Print_ISBN

978-1-4244-1173-3

Electronic_ISBN

978-1-4244-1174-0

Type

conf

DOI

10.1109/CLEOPR.2007.4391752

Filename

4391752