Ditemukan 3 dokumen yang sesuai dengan query
Wahyu Setia Budi
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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 pressure. The beam divergence is found to be 7.7 mrad horizontally and 1.5 mrad vertically. The energy output decreases slightly with increasing gas pressure and ...
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1992
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Bernadus Hariadi Chrismastoro
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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 reveals a small drop in energy at higher frequency i.e. 10 Hz by a factor of 20%. N2 flow rate consideration behaves on the similar ...
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Depok: Program Pascasarjana Universitas Indonesia, 1994
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Retno Wigajatri Purnamaningsih
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Eksperimen untuk mengamati karakteristik fluoresensi Chlorella spp. dengan menggunakan laser Nitrogen yang memiliki stabilitas dan frekuensi repetisi tinggi (energi 5 mJ, durasi pulsa 5 ns) telah dilakukan. Hasil percobaan menunjukkan untuk rentang konsentrasi 2.625 sel/ml hingga 2.769.000 sel/ml, intensitas fluoresensi pada λ = 687 dan konsentrasi sel memiliki hubungan linier. Juga ditunjukkan pada kultur Chlorella spp usia 7 hari, variasi pH pada awal kultur berpengaruh terhadap konsentrasi sel yang dihasilkan.
The Study on Fluorescence Characteristics of ...
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Depok: Lembaga Penelitian Universitas Indonesia, 2003
AJ-Pdf
Artikel Jurnal Universitas Indonesia Library
