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Articles

ANALISA SPEKTROSKOPI EMISI UNTUK PENENTUAN TEMPERATUR ELEKTRONIK PADA PLASMA NON-TERMIK NITROGEN Nur, Muhammad; Bonifaci, Nelly; Denat, Andre
REAKTOR Volume 13, Nomor 2, Desember 2010
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.894 KB) | DOI: 10.14710/reaktor.13.2.103-108

Abstract

Suatu metoda baru telah dikembangkan untuk penentuan temperatur elektronik dari plasma non-termik nitrogen dengan menggunakan spektroskopi emisi. Metoda ini telah dipakai untuk plasma non-termik nitrogen yang diproduksi dalam lucutan pijar korona densitas tinggi. Dengan mengasumsikan bahwa fungsi distribusi energi dari elektron adalah distribusi  maxwellian dan penggunaan data tampang lintang efektif dari sistem positif kedua, 2s+, (C3Pu®B3Pg) dari N2 dan sistem negatif pertama, 1s– (B2S+u®X2S+g)  dari N2+, hubungan antara energi rerata elektron dengan perbandingan intensitas 1s–(0-0) dan intensitas 2s+(2-5) dapat diselesaikan ecara teoretik. Spektrum emisi dari molekul nitrogen tereksitasi, (C3Pu®B3Pg) dari N2 dan molekul terionisasi, 1s– (B2S+u®X2S+g) dari N2+, secara eksperimen diperoleh dari spektroskopi emisi. Melalui identifikasi dan analisa spektru-spektrum tersebut, perbandingan intensitas 1s–(0-0) dan intensitas 2s+(2-5) diperoleh secara eksperimen. Metoda ini telah diterapkan untuk menentukan energi rerata elektron atau temperatur elektronik dari plasma non termik nitrogen dalam lucutan pijar korona dengan densitas dari 2,4 x 1020 cm-3 sampai 9,2 x 1020 cm-3
ANALISIS MEDAN LISTRIK PADA PLASMA KORONA DENGAN KONFIGURASI CINCIN BIDANG Wardaya, Asep Yoyo; Nur, Muhammad
BERKALA FISIKA Vol 13, No 4 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

It has been studied efectivity of the electric field and density of current that have been determined by the physical criteria from a long size of cylinder and a radius of thin ring from the corona plasma generator with the plane ring electrode. The result of the calculation is indicate that the strong electrics field will be resulted by the configurations of the thin ring form, contiguity apart between the thin rings (minimum cylinder length) and the size of the thin ring radius which near of the size of external cylinder radius. The radial symmetrical of geometric form of the thin ring is causing it has not current density form at tip of the thin ring.   Key words : Plasma,  plane-ring, electric field, density of current.
THE ELECTRIC FIELD FORMULATIONS IN THE PLANE-KNIFE CONFIGURATIONS Yoyo Wardaya, Asep; Nur, Muhammad
BERKALA FISIKA Vol 14, No 2 (2011): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

In this paper, we calculate enormous electric field produced by the plane-knife configuration of the plasma generator. The value of electric field is calculated by two ways of configurations, the first is the almost perpendicular form of the Capasitor plates and second the perpendicular one. The result of calculation is the plates perpendicular form will produce higher electric fields than the almost perpendicular case. Key words : Plasma generator,  plane-knife configuration , electric field.
Ozone Generator by Using Dielectric Barrier Discharge Plasma Technology With Spiral-Cylinder Configuration: Comparison Between Oxygen and Air As Sources Nur, Muhammad; Supriati, Aris; Hari Setyaningrum, Dyah; Gunawan, Gunawan; Munir, Mohammad; Sumariyah, Sumariyah
BERKALA FISIKA Vol 12, No 2 (2009): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

The ozone generator with Dielectric Barrier Discharge Plasma Technology (DBDPT) with Spiral-cylinder configuration has been developed. DBDP Reactor was constructed with spiral wire and cylinder. Plasma condition has been generated by using AC high voltage Ozone has been produced by this technology with oxygen and dry air as sources for ozone generating. In this research we found that the concentration of ozone produced increases with increasing voltage with a time constant. This concentration also increases with increasing time in certain applied voltage. Ozone concentration was higher than the concentration of dissolved ozone in water. Dissolved ozone in water was only 10 % of ozone produced and only 7 % for dry air as source. Oxygen as source of ozone was better than dry air; both for ozone produced and dissolved ozone in water.   Keyword : Ozone, Spiral-cylinder, DBDP, Oxygen, Dry air
Aplikasi Plasma Lucutan Berpenghalang Dielektrik pada Peningkatan Kualitas Air dengan Mengalirkan Air secara Langsung dalam Reaktor Berkonfigurasi Elektroda Spiral-Silinder Muhlisin, Zaenul; Oktiyana, Wulandary; Nur, Muhammad
BERKALA FISIKA Vol 12, No 3 (2009): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

A dielectric barrier discharge plasma reactor has been realized and characterized with air source as a working gas. Ozone and dissolved ozone concentration were measured at various voltages (4 to 8 kV), treatment time ( 1 to 5 minutes), water flow rate 4.167 l/min and different air flow rates (1.5 and 2.5 l/min). And the other hand, for understand the ability of ozone to improve water quality, dissolved oxygen has been measured at various voltage (3.6 to 5.2 kV) and after treatment time (until 90 minutes). Spiral electrode is made by copper wire with circumference length 500 mm and diameters 1 mm, while cylindrical electrode is made from aluminum foil with 450 mm in length. Aluminum foil is stuck at inner wall of PVC tube with 500 mm in length and diameter 1.25 inch. Pyrex is used as dielectric material, with length 500 mm, inner diameter 10 mm and thickness 1 mm The result show ozone is produced have maximum concentration 15.613 ppm and dissolved ozone have maximum concentration 10.305 ppm. As a whole ozone concentration higher than dissolved ozone concentration. Both of ozone and dissolved ozone concentration increases by increase of the voltage applied, increases by increase treatment time and increases by decrease of the gas flow rate inside the reactor. Command dissolved oxygen increases with the increase of the high voltage applied and increases after dissociation ozone in water. Key Words : spiral cylindrical electrode, dielectric barrier discharge, the ozone concentration, the dissolved ozone concentration, dissolved oxygen
Analisis Spektrum Atomik dalam Penentuan Temperatur Eksitasi, Temperatur Elektronik dan Densitas Elektron Plasma Argon Nur, Muhammad
BERKALA FISIKA Vol 12, No 3 (2009): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Determination of excitation temperature, electron temperature and density of electron has been done through analysis of the atomic spectrum. Atomic spectrum emitted by the argon plasma with a pressure of 1 MPa. Plasma generated in a corona glow discharge reactor. Excitation temperature (Texc) was obtained by using the Boltzmann distribution and the plasma was assumed to occur in Local Thermodynamic Equilibrium (LTE). Electronic temperature (Te) was obtained by using Saha distribution and taking the ratio between the intensity of the observed spectrum (integrated in the frequency interval) with continuous intensity was observed (not integrated). From the two temperatures, and using the Saha distribution, the density of electron/ion (Ne = Ni) can be determined. Argon plasma which was in LTE condition with a pressure of 1 MPa, Texc = 2877.70 K, Te = 21266.54 K and Ne = Ni = 4.60 x 1021 cm-3 were  obtained   Keyword: Excitation temperature, electron temperature, density of electron, atomic spectrum, corona glow discharge, Boltzmann distribution, Saha distribution, Local Thermodynamic Equilibrium
Koreksi Tekanan Gas Ideal untuk Plasma sebagai Materi Fase ke empat dan Penerapannya pada plasma Argon Nur, Muhammad
BERKALA FISIKA Vol 12, No 4 (2009): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Pehitungan secara analitik telah dilakukan untuk memperoleh perumusan tekanan pada plasma. Perhitungan dengan pendekatan non kuantum ini megunakan fungsi-fungsi termodinamika dalam gas seperti entropi, entalpi, energi bebas  Helmholtz, energi bebas Gibs dan fungsi-fungsi partisi partikel dalam Plasma. Perumusan yang diperoleh digunakan untuk menentukan tekanan pada plasma korona Argon densitas tinggi dan plasma Argon gelombang  mikro pada tekanan gas awal 1 atmosfer. Hasil pehitungan tekanan diperoleh perbedaan dantara tekanan gas panas dengan tekanan kondisi plasma sebesar ΔPplasma1/24π Pgas dimana tekanan pada kondisi plasma lebih kecil dari tekanan gas panas. Penerapan terhadap plasma korona argon densitas tinggi, ditemukan bahwa tekanan plasma berubah secara parabolik terhadap perubahan densitas dan tekanan plasma berubah secara linear terhadap temperatur.   Key words:Plasma. gas panas, tekanan, termodinamika, energi bebas, argon, densitas, temperatur
Rancang Bangun dan Pengujian Sistem Reaktor Plasma Lucutan Pijar Korona guna Mempercepat Pertumbuhan Tanaman Mangrove Triadyaksa, Pandji; Nur, Muhammad; Nasrudin, Nasrudin; Wasiq, J.
BERKALA FISIKA Vol 10, No 3 (2007): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Plasma glow discharge corona reactor system has been made and tested to stimulate mangrove growth. Plasma glow discharge corona reactor consists of DC high voltage system and point to plate electode system. Reactor performance test has done on Rhizophora apiculata mangrove species. High voltage system mainly develop using TV fly back that been triggered by pulsed frequency using oscillator circuit. Point to plane electrode system was designed to maintain two electrode range remains 3 cm with number of point electrode plugged parallel with plane electrode are 63 pieces. Plasma glow discharge corona reactor tested  was done on radiation process of mangrove seed by divided sample groups into 6 sample which have different time radiation and 1 sample that not been radiated as a control data. Mangrove growth was analyzed by measure the growth of mangrove plumulae after 17 days of cultivation. Research results shows that in developing plasma glow discharge corona to radiate mangrove, plasma reactor system works in 8 kV DC plasma voltage development. Mangrove growth after 6 time variation of plasma radiation shows a good effect of growth stimulation along with longer radiation time duration.  The increase of mangrove growth was hypothetically caused by an increase of nitrogen concentration in mangrove seeds because of ion nitrogen fixation in the seeds during plasma radiation process
ANALISIS FENOMENA ELECTROHYDRODYNAMIC PADA PERMUKAAN MINYAK SILIKON (CAIRAN DIELEKTRIK) MENGGUNAKAN SISTEM PEMBANGKIT PLASMA LUCUTAN PIJAR KORONA NEGATIF DENGAN ELEKTRODA BERKONFIGURASI TITIK BIDANG Nur, Muhammad; Anam, Choirul; Arisa, Betri
BERKALA FISIKA Vol 10, No 2 (2007): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

An analysis of Electrohydrodynamic (EHD) phenomenon deformation of oil silicon surface has been done.The negative corona glow discharge plasma in this research is generated by plasma generator system in point to plane electrodes configuration. The first step of experiment is to determine correlation of voltage and electric current, and correlation of distance between electrode and electric current. Then, the second is to determine correlation of voltage and hole radius of oil silicon surface, and corelation of distance between electrode and hole radius of oil silicon surface. Finally, it is to determine  the velocity hole for back to initial position of oil silicon surface after turn off electric field. The EHD phenomenon of oil silicon can be generated by impose of non homogeneous high electrics field. The voltage of corona at distance between electrodes 1 cm, 1,5 cm and  2 cm are 2,6 kV-4 kV,  3,4 kV-5,2 kV, and  3,8 kV-6,0 kV respectively. The increase of electrics field intensity influence dipole moment strength, it increases the radius of the hole of oil silicon surface. The increase of distance between electrode influence parabolic angle of electrics line field then cause the increase of hole radius. After this, if the electric field is zero with  increasing voltage, velocity hole of  oil silicon for back to initial position  slower then if the increasing of h, that makes the velocity hole for back to initial position faster.   Key words: Electrohydrodynamic, Silicon Oil, Dielectric polarization, Positive corona glow discharge plasma, ionic wind.
Analisis Fenomena Elektrohidrodinamik pada Permukaan Minyak Silikon Menggunakan Plasma Lucutan Pijar Korona Positif Rahayu, Sri; Azam, M.; Triadyaksa, Pandji; Nur, Muhammad
BERKALA FISIKA Vol 10, No 1 (2007): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

The aim of this research is analysis electrohydrodynamic phenomenon deformation of oil silicon surface by technology of positive corona glow discharge plasma which generated by plasma generator system with point-to-plane electrodes geometry configuration. Variation of voltage and distance between electrodes had been treated to surface of silicon oil. Electrohydrodynamic phenomenon deformation in this research is caused by polarization and ion wind. Ionic wind would be happened if applied voltage over the corona threshold that was 2.6 kV. Graph current of saturation corona unipolar for variation voltage, being formed semi-parabolic equation while the variation of distance between electrodes, being formed linear equation. The hole diameter at variation voltage was influenced by electrics field intensity and momen dipole strength. The hole diameter at variation of distance between electrode was influenced by parabolic angle of electrics line field. The oil velocity for back to initial position is different. Velocity would be go down if the voltage progressively go up and velocity would be go up if the distance between electrode progressively go up.
Co-Authors A. Haris A. Rusgiyono Adhi Prasetyo, Adhi Adiningrat, Andi Arifwangsa Agus Setyawan Agus Subagio Ahmad Suseno Ainie Khuriati Andi Wibowo Kinandana, Andi Wibowo Andiewati, Suci Andre Denat Anggara, Andhika Dwi Anggunan, Anggunan Anna Adianti, Anna Annas Pyriadi, Annas Aris Supriati Arnelli Arnelli Asep Yoyo Wardaya Asep Yoyo Wardaya Askar, M. Awal Syahrani B. Raharjo Bagus Putro Harlande, Bagus Putro Betri Arisa Budianto Hakim, Budianto Bukit Yuta Wirawan Choirul Anam Citrawati, Citrawati Cut Zahri Harun D. Ispriyanti D. S. Widodo Dachrul Aldy, Dachrul Dhyan Prastiwi, Dhyan Dian Arif Rachman Djalal Er Riyanto Dwi Sartika, Dwi Dyah Hari Setyaningrum E. Setiawati Edi Munawar Eko Hidayanto Eko Komaruddin Endang Kusdiyantini Eva Ayuzar, Eva F. Ariyanto Fajar Arianto Farikhin Farikhin Firdawati, Firdawati Fitrawati, Rahmi Gede Wiratma Jaya, Gede Wiratma Gunawan Gunawan Guslihan D. Tjipta, Guslihan D. H. Sutanto Haerani Haerani Hariani, Lilik Sri Hasan, Zulfikar Ali Hasanuddin WS Heru Tjahjana Hikmasari Hikmasari, Hikmasari I. Marhaendrajaya Ika Indah Selawanti Ikfi Rahmahidayati Irfan Wahyu Nugroho J. E. Suseno J. Wasiq Jatmiko Endro Suseno Joeharnani Tresnati Joeharnani Triesnati, Joeharnani Josepa ND Simanjuntak Lalu Muhammad Kasip M. Azam M. Izzati M. Khoiru Rusydi M. Shobarudin Mariana Mariana Maryam Restiwijaya Melaniani, Soernarnatalina Melaniani, Soernarnatalina Metungku, Nofrita Angelina Mochammad Abdul Mukid, Mochammad Abdul Moh Tauhid Umar, Moh Tauhid Moh. Tauhid Umar, Moh. Tauhid Mohammad Munir Much. Azam Muh Arifin Dahlan, Muh Arifin Muh. Arifin Dahlan, Muh. Arifin Muhajir Muhajir, Muhajir Muhammad Nasir Muhammad Yasir Mujiburrahman Mujiburrahman Munazir, Rahcmad Mustafid Mustafid Naharuddin Naharuddin Nani Somba, Nani Nasrudin Nasrudin Nelly Bonifaci nfn Hasanuddin, nfn Nintya Setiari Nouval Khamdani Noval Azis, Noval Novia Juita Nurul Fajri Pandji Triadyaksa Prama Hartami, Prama Priyono Priyono R. Hariyati R. Hastuti Ratna Wulan Sutanti Reza Mustagfaran, Reza Rika Subarniati Ririh Yudhastuti Ririn Sulpiani Rizky Maylia Rofiqotul Khasanah, Rofiqotul Rosita, Andriani Rustam Awat, Rustam S, St Aisyah S. Tana Safwadi, Irwan Saifur Rijal Sakdiah Ibrahim, Sakdiah Sapto P Putro Saraslifah Saraslifah, Saraslifah Satriyo Adhy Sharifuddin Bin Andy Omar, Sharifuddin Bin Sharifuddin Bin Andy Omar, Sharifuddin Bin Andy Sitepu, Farida Gasing Sjafrul Latif Sjafrul LatifNitrogen ions have been generated in the air by corona glow discharge plasma. The Soekardono Soekardono, Soekardono Sosiawati Teke Sri Rahayu Sri Setyani SUBHAN SUBHAN Sudarno Sudarno Sugiarto Sugiarto Sugito Sugito Suhartono Suhartono Sumariyah Sumariyah Suwarni Suwarni Syahruddin Mansyur, Syahruddin Syam, Jumriah Syamsu Nujum T. Windarti Taat Guswantoro, Taat Tolleng, AL Tri A Winarni Tri Winarni Agustini Udi Harmoko Usman Usman Vincencius Gunawan, Vincencius W. Rahmanto Wahyu Adi Wijaya WIDIYATMOKO, FAJAR ARI widowati widowati Wisnu Satyajaya Wulandari, Pradita Defi Wulandari Defi Wulandary Oktiyana Yadi Mulyadi Yoesoef, Anwar Yudi Pratama, Yudi Yusuf, Zulfan Z. Muhlisin Zaenul Muchlisin Zaenul Muhlisin Zahar, Intan Zain, Alfatihatuz Zulfah Zulhelmi Zulhelmi, Zulhelmi