Title :
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
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;
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
DOI :
10.1109/CLEOPR.2007.4391752
