Ditemukan 20 dokumen yang sesuai dengan query
Hidjan, author
ABSTRAK
Tujuan dari eksperimen yang dilakukan adalah untuk menyelidiki hal-hal yang berkaitan dengan pembentukan plasma, yakni zat yang tersusun dari muatan-muatan listrik bebas berupa ion-ion positif dan elektron elektron negatif yang jumlahnya nyaris sama.
Plasma yang digunakan dalam eksperimen terbentuk dari udara laboratorium yang di iradiasi dengan berkas laser energi tinggi (...
Depok: Fakultas Teknik Universitas Indonesia, 1994
T-Pdf
UI - Tesis (Membership) Universitas Indonesia Library
Suroso, author
ABSTRACT
As transmission medium in optical communication system, optical fiber is also characterized by elastic properties beside of transmission properties of optical fiber. The Young Modulus of Elasticity of optical fiber could be measured by considering a bare optical fiber as cantilever which resonant with an acoustical vibration. To...
1992
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UI - Tesis (Membership) Universitas Indonesia Library
Samuel H. Tirtamihardja, author
ABSTRACT
Data acquisition system using diode array for a spectrometer has been designed and constructed. The light detection is performed by a photodiode array consisting of 512 photodiodes. The superior quantum efficiency of the detector and the direct increase of optical flux with photodiode electrons make it works as a very...
1989
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UI - Tesis (Membership) Universitas Indonesia Library
Wagini R., author
ABSTRACT
Many alkali halides crystal develop new absorption bands upon exposure to ionizing radiations. the absorbing centers responsible for these bands are called "Color-Centers". De Boer 1937 was proposed a model for one of the color centers, is called the "F-Center" which consisted essentially of an electron trapped at the position...
1991
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UI - Tesis (Membership) Universitas Indonesia Library
Marpaung, Mangasi Alion, author
ABSTRAK
An N2 laser system that consists of transversely excited atmospheric (TEA) oscillator and transversely excited (TE) amplifier has been designed and constructed. The laser system employs single common spark gap for both oscillator and amplifier. The optimum operating voltage is 15 kV at 2 Hz repetition rate. The measured energy...
1993
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UI - Tesis (Membership) Universitas Indonesia Library
Wahyu Setia Budi, author
ABSTRAK
A compact, simple and low-cost transversely excited atmospheric (TEA) pressure ultraviolet nitrogen laser {337 nm) has been designed and constructed employing the conventional Blumlein circuit. The measured energy of the output pulse of 337 nm is around 80 -J at 25 kV of charging voltage and l atm operating gas...
1992
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UI - Tesis (Membership) Universitas Indonesia Library
Ering Poernomo Setianto, author
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UI - Tesis (Membership) Universitas Indonesia Library
Dede Sujadi, author
Computer simulation program has been developed on the basis of Liapunov approach for the study of MRAC technique applied to pressure control for a vacuum system. Both proportional and integral feedback as well as disturbance feedforward is considered in the closed-loop system. The simulation result obtained with a personal computer...
Depok: Universitas Indonesia, 1989
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UI - Tesis (Membership) Universitas Indonesia Library
Sunarto, author
A fluorescence spectrometer, with gating PMT (Photo Multiplier Tube) has been designed and constructed for the observation of Time Resolved Spectroscopy. Employed as a source far the fluorescence spectrometer a pulsed N2 lasers with about 5-nanosecond pulse width and 400-kilowatt power. Gating PMT carries out the sampling. In this method...
Depok: Fakultas Teknik Universitas Indonesia, 1988
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UI - Tesis (Membership) Universitas Indonesia Library
M. Yunil, author
ABSTRACT
A vacuum chamber has been designed and constructed for the observation the primary plasma and secondary plasma which is generated by the bombardments of brass by N2 Laser beam with about 5 ns pulse width and 1 1W power.
The Radius and spectral emission of the resulting secondary plasma...
1988
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UI - Tesis (Membership) Universitas Indonesia Library
