INDONESIAN JOURNAL OF APPLIED PHYSICS
Indonesia Journal of Apllied Physics provides rapid publication of short reports and important research in all fields of physics. Indonesia Journal of Apllied Physics publishes articles that are of significance in their respective fields whilst also contributing to the disclipline of physics as a whole. Articles should be submitted to the Editorial Office of Indonesia Journal of Apllied Physics through this site. Further information on submission is also available at this site
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<![CDATA[Sensor Fiber Optik Dari Bahan Fiber Optik Polimer Untuk Pengukuran Refractive Index Larutan Gula ]]>
Nila Wulan Sari; Ahmad Marzuki; Riyatun R
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1286
<![CDATA[This paper presents an experimental result on developing an optical fiber sensor for measuring refractive index of sugar solution. Sensor was developed using polymer optical fiber with diameter of 3 mm. This sensor is working based on intensity modulation due to reflection. Light coming out from the transmitter optical fiber is reflected by a mirror to the receiver optical fiber. Due to the variation of sugar concentration in solution surrounding this sensor, the way of light entering the fiber receiver depends on the sugar concentration (numerical aperture). It is clear from the experiment that light intensity detected by photodetector (represented by electric voltage) is linearly dependent (R2 = 0.987) on the variation of sugar solution refractive index.]]>
<![CDATA[Penerapan Metode Geolistrik Untuk Identifikasi Pola Penyebaran Zona Asin Di Bledug Kuwu, Grobogan, Jawa Tengah ]]>
<![CDATA[Darman D]]>;
<![CDATA[Cari C]]>;
<![CDATA[Darsono D]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1298
<![CDATA[Geoelectrical is one of geophysics methods which is used to investigate the early stage in the shallow exploration. The research is conducted at Bledug Kuwu with Schlumberger configuration method containing the two points of potential electrodes and the two points of electrical current electrodes. The equipment used in this research are OYO model 2119C, GPS, meter roll, cable as current and potential electrodes. The purpose of the research is to identify the spreading pattern of salty zone at Bledug Kuwu. The distribution pattern of salty zone is characterized by thickness of 1.55 to 71.9 meters and rangeresistivity of 0.055 to 0.460 Ωm. At west of large Bledug, the salty zone is detected at the depth of 5.0 to 10.0 meters and 30.0 to 50.0 meters. Meanwhile at east of large Bledug, the salty zone is detected at the depth of 5.0 to 15.0 meters and 40.0 to 60.0 meters. The salty zone spread from north to south at both west and east of large Bledug with resistivity of 0.05 to 0.50 Ωm at depth of 5.0 to 50.0 meters.]]>
<![CDATA[Perolehan Tio2 Dari Iron Ore Mengandung Titanium Melalui Proses Reduksi Karbon Dan Pelarutan Asam ]]>
<![CDATA[Elda Rayhana]]>;
<![CDATA[Azwar Manaf]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1288
<![CDATA[REDUCTION AND LEACHING PROCESSES. Indonesia has a large source of iron ore which is quite tempting for the purposes of exploitation in form of raw materials as well as for the production of pig iron. However, not all sources of iron ore are proved useful since not only because the present of deposit is scattere dinamounts of less significant but also because it contains element of tin oxide compounds with iron like ilmenite or FeTiO3. However,ilmenite can actually be used as a source of titanium metal which is much more valuable than Fe it self. In order to recover the Ti from their respective compound it is required the release of strong bonds between the atoms in the compound. This paper reports the recovery of Ti oxide of ilmenite containing iron ore which was obtained through a combination of carbon reduction and acid leaching processes. Carbon reduction of iron ore was carried out through mechanical milling between iron ore and carbon with a ratio of 1:1. This was successively followed by a sintering at a temperature of 1000 oC employing a heating rate of 10 ° C/min for 0-3 hours. The reduction process has resulted in the formation of 27.83wt% TiO2. In order to improve the recovery level of TiO2, further reduction process was conducted through an HCl leaching. This successive stage produced fine powders in the form of deposits. Based on our quantitative analysis, the recovery of TiO2 increased to a level of 73.73%.]]>
<![CDATA[Pengaruh Rapat Arus Terhadap Ketebalan Dan Struktur Kristal Lapisan Nikel pada Tembaga ]]>
<![CDATA[Setyowati S]]>;
<![CDATA[Y Iriani]]>;
<![CDATA[A H Ramelan]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1278
<![CDATA[The effect of current density on thickness and crystal structures of the coatings in the electroplating of nickel on copper has been investigated. The electroplating of nickel was conducted at a voltage of 0.5 V for 10 minutes with varied current densities of 0.3 mA/cm2; 0.6 mA/cm2; 0.9 mA/cm2; and 1 mA/cm2. The nickel coatings werw tested by thickness measurement and crystal structures determination. The experimental results showed that the thickness of the nickel coatings increased as the current density increased. The XRD characterization of the nickel coatings revealed the diffraction patterns for cubic structures with orientation of (111) and (200). As the current density increases, the crystal with (111) and (200) orientation tends to be formed more lagely.]]>
<![CDATA[Identifikasi Situs Candi Bukit Carang, Karanganyar Menggunakan Metode Geolistrik Tahanan Jenis Konfigurasi Dipol-Dipol ]]>
Diah Sri Jayanti; Darsono D; Budi Legowo
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1290
<![CDATA[Identification of temple sites have been performed on the Bukit Carang region atAnggrasmanis, Jenawi, Karanganyar, Central Javausing the geoelectricity resistivitymeasurement with a dipoles configuration method. This method can determine buried sites around the site groundwork. Software Surfer ver 8.0 and Res2dinv ver 3.30b are used to analyze the mapping data and the sounding data, respectively. This research foundelevenanomalies structured andesite’s rock with resistivity of935-1511 Ωmwhich is considered as temple sites.]]>
<![CDATA[Analisis Energi Osilator Harmonik Menggunakan Metode Path Integral Hypergeometry dan Operator ]]>
Fuzi Marati Sholihah; Suparmi S; Viska Inda Variani
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1280
<![CDATA[Solution of the harmonic oscillator equation has a goal to get the energy levels of particles moving harmonic. The energy spectrums of one dimensional harmonic oscillator are analyzed by 3 methods: path integral, hypergeometry and operator. Analysis of the energy spectrum by path integral method is examined with Schrodinger equation. Analysis of the energy spectrum by operator method is examined by Hamiltonian in operator. Analysis of harmonic oscillator energy by 3 methods: path integral, hypergeometry and operator are getting same results ? = ℏ? (? + 1 2)]]>
<![CDATA[Identifikasi Bidang Gelincir Pemicu Bencana Tanah Longsor Dengan Metode Resistivitas 2 Dimensi Di Desa Pablengan Kecamatan Matesih Kabupaten Karanganyar ]]>
Darsono D; Bambang Nurlaksito; Budi Legowo
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1292
<![CDATA[Investigation of landslide slip surface has been conducted at Salaman Sub village, Pablengan Village, Matesih District, Karanganyar Regency, Central Java Province by using dipole-dipole array geoelectrical resistivity method. Data processing were using Res2Dinv version 3.45 (semi demo version) software. The interpretation result showed that at the research area was found lithology consist i.e. clay, wet clay, sandy clay until claysand, sand until breccia. The slip surface is a wet clay layer with resistivity value range from 19.3 Ω m to 36.6 Ω m, for one section was found with depth of 1.7 meter until 17 meters, and for two section was found with depth of 8.9 until 16.4 meters.]]>
<![CDATA[Dinamika Pertukaran Partikel Pada Interaksi Nukleon-Nukleon Dalam Potensial Lokal ]]>
R Yosi Aprian Sari; Supardi S; Agung BSU; Arief Hermanto
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1282
<![CDATA[The interaction of two nucleons in the form of protons and neutrons as a bound system in the local potential, known as the deuteron, has been investigated. Two-nucleon interaction potential field through the core will produce a nuclear force where the force between nucleons is generated by the exchange of mesons. One of the members of the group of meson particles is pion. Pion can be chargedπ + ,π -or neutral,π 0. Interaction potential form of the simplest is the exchange of one pion potential (OPEP), V OPEP , which has a radially independent of Yukawa potential. In this study, the first step taken is to perform discretization of the OPEP potential expression coupled with the equation of the boundary conditions due to the influence of interaction distances. The next step is to implement a programming technique to obtain the value associated with the potential influence of OPEP in the deuteron, the magnitudes of the static deuteron, such as a pion distance exchange, and mass estimates pion involved in this interaction.]]>
<![CDATA[Effect of Annealing Temperature On Iron Doped Titanium Dioxide Thin Films Prepared By Spin Coating Technique ]]>
Mukhtar Effendi; Bilalodin B
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1294
<![CDATA[Iron (Fe) doped titanium dioxide (TiO2) thin films have been successfully deposited by using spin coating technique. X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) were employed to characterize the microstructure and crystallite morphology of the films. It was indicated that the rutile crystal orientation appears due to increasing annealing temperature of the thin films. Furthermore, increasing annealing temperature of the thin films yielded an increasing of porosity value which is related to the application on gas sensor films.]]>
<![CDATA[Pembuatan Beton dengan Campuran Limbah Plastik dan Karakterisasinya ]]>
Yessi Rismayasari; Utari U; Usman Santosa
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
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DOI: 10.13057/ijap.v2i02.1284
<![CDATA[Research on concrete containing plastic waste as an alternative polymer material has been conducted.It studied the concrete characteristic through compressive strength, impact testing, thermal conductivity, and density testing. Plastic waste used for concrete manufacture was black because it is strong but light. The goal of this research is to determine the characteristics value of concrete with and without plastic waste mixing. Concrete was mixed with the ratio of 1cement: 2 sands: 3 gravel and cement water factor of 0.5. The addition of plastic waste were 0%, 2%, 4%, 6%, 8%, 10% of cement mass.Specimens used was (15x15x15) cm cube with sides for compressive strength testing, (8x2x2) cm a block with the size of for impact testing, acylinder with a diameter of 4cm and thickness respectively 0.2 cm and 0.4 cm for thermal conductivity testing, and a sides (15 x 15 x 15)cm cube with for density testing. The diameter of plastic waste was 0.1 to 0.8 cm. The test was performed at 28 days of concrete age. The result showed that the addition of 4% of plastic waste recorded the best compressive strength, impact testing, and thermal conductivity. In this research, the density was of the range (16 ± 6)x 102 kg / m³up to(22 ± 4) x 102 kg / m³, compressive strength(21.8 ± 0.2) x 106 N / m² of the range (16 ± 0.1) x 106 N / m²to(21.8 ± 0.2) x 106 N / m², impact (8.7 ± 0.3)x 10-1Joule to the range (3.5 ± 0.3)x 10-1Joules up to (8.7 ± 0.3)x 10-1Joule and thermal conductivity (6.0 ± 0.5) x 10 -5 kcal / ms °C was (1.17 ± 0.5) x 10-5 kcal / ms °C to (6.0 ± 0.5) x 10 -5 kcal / ms °C.]]>
