Ditemukan 23 dokumen yang sesuai dengan query
Bernadus Hariadi Chrismastoro, author
Characterizations have been performed on single stage Transversely Excited Nitrogen Laser of Blumlein type. Optical cavity arrangement is varied prior to measurement which shows no significant increase in energy on both configurations of inserting a mirror only and a pair of mirror and a quartz parallel plate. Frequency repetitions respond...
Depok: Program Pascasarjana Universitas Indonesia, 1994
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Siswayudi Azhari, author
A spectrometer application of time resolved method spectroscopy has been used in many times of experiment on physical of atomic, molecule and ionized plasma behavior. This paper is completed to make experimental work easier in reading and processing of datum. Using PC and interfaces can make signal convert to digital...
Depok: Program Pascasarjana Universitas Indonesia, 1994
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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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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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Ering Poernomo Setianto, author
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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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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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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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Lantu, author
ABSTRAK
The design and construction of eight-bit tune delay autocorrelator is discussed, suitable for use in photon correlation experiments. The sampling time of the correlator can be varied from 1 usec to 100/usec, devide into a number ( typically 256 ) channels (time interval). The instruments records the number of pulses...
1987
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Ering Poernomo Setianto, author
ABSTRACT
The principles of frequency stabilization is to keep constant the optical path length in laser cavity by controlling the laser- tube length. In this system used temperature servo control to control the laser tube length.
As reference to an error derived by a sensitive frequency discriminator. Basically the operation of this...
Depok: Fakultas Teknik Universitas Indonesia, 1988
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