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
Articles
351 Documents
<![CDATA[Identification of Cracked Zone in Sutami dam Using Geoelectrical Method ]]>
<![CDATA[Fina Fitriah]]>;
<![CDATA[Sunaryo S]]>;
<![CDATA[Adi Susilo]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 02 (2015): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.13057/ijap.v5i02.294
<![CDATA[We identified the craked zones based on geoelectrical resistivity method in Sutami Dam. There are four lines measurement of geoelectrical resistivity method with a length of 380-400 meters. The direction of each line is from the northeast to the southwest. All of the tracks are located at the top of Sutami Dam i.e. two tracks in the upstream and the others in the downstream. From the analysis we found that the lithology is detected by geoelectrical resistivty method showed two layers of design of Sutami Dam. The two layers that are detected are transition zone and filter zone. Transition zone consists of sandstone rock containing water (0.922 Ωm-9.57 Ωm) and dry sandstone (>9.57 Ωm-320 Ωm). Filter zone consists of sand (>320 Ωm-4410 Ωm). Cracked zones spread in the upstream, downstream, and roadway at the top of Sutami Dam which are indicated by the presence of low resistivity (0.922 Ωm-9.57 Ωm) based on 3D processing of data of geoelectrical resistivity. The distribution of cracked zone indicates that Sutami Dam is susceptible to ground movement.]]>
<![CDATA[Kinerja Inkubator Bayi dengan Pemanas Tanpa Listrik yang Dilengkapi Unit Pemantau Suhu dan Kelembaban Udara ]]>
Wihantoro W; Abdullah N Aziz; Mukhtar Effendi; Sukmaji A Raharjo
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.13057/ijap.v3i01.1206
<![CDATA[An infant incubator utilizing a non-electrical heater element and an add-on temperature and relative humidity controlling unit has been produced. Copper pipe in planar spiral construction which usually found as a radiator element in refrigerator was used as the heater element. Once the hot water filled into the element, it will served as heat energy source for (40 x 58 x 40) cm3volume of incubator’s baby compartment. Compartment’s performance (P) in providing the heat energy was to be found as 0.4 J/s and the average constant temperature achievable was 34.2 oC. Two of LM35 ICs were operated as dry and wet sensor each and served as the input for temperature and humidity quantities for baby’s compartment. These both sensors were set by CV-AVR package program which then was loaded into the ATMega8535 chip. An LCDscreen of 20x2 matrices was then used in displaying these both quantities. Dry and wet temperature sensors which were used to acquire the value of air temperature and relative humidity within baby’s compartment to be found have sensitivity value of 0.02 0.01 volt/oC and 0.03 0.01 volt/oC, each.]]>
<![CDATA[Desain Sensor Serat Optik Sederhana untuk Mengukur Konsentrasi Larutan Gula dan Garam Berbasis Pemantulan dengan Menggunakan Konfigurasi Jarak Cermin-Fiber Optik Tetap ]]>
Arrini Nurul M; Ahmad Marzuki; Mohtar Yunianto
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.13057/ijap.v3i02.1254
<![CDATA[A simple method to measure a solution refractive index using fixed mirror refractive optical fiber sensor has been investigated. The solution used are sugar and salt solution, with concentration varies from 1M to 5M. The diameter of polymer optical fiber used is 0.5 mm and light source used is LED (λ=676 nm). The sensor work based on light intensity modulation, sub jected to mechanical structure change of the fiber due to an applied force. The result showed that the concentration of sugar and salt linearly are related with their refractive indeces (R2=0,95006) and (R2=0,99858).]]>
<![CDATA[Front Matter ]]>
Mohtar Yunianto
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 1 (2018): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.13057/ijap.v8i1.24060
<![CDATA[Back Matter Vol 8 No 1 2018 ]]>
Mohtar Yunianto
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 1 (2018): April ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.13057/ijap.v8i1.24062
<![CDATA[Physical Modeling on Time Domain Induced Polarization (TDIP) Response of Metal Mineral Content ]]>
<![CDATA[Yatini Yatini]]>;
<![CDATA[Djoko Santoso]]>;
<![CDATA[Agus Laesanpura]]>;
<![CDATA[Budi Sulistijo]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 2 (2018): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (668.983 KB)
|
DOI: 10.13057/ijap.v8i1.20648
<![CDATA[The Induced Polarization (IP) methods is an extension of resistivity method by adding ability of the ground in storing electrical charge. One of the measurement technique is done in time domain, hereinafter referred to as Time Domain Induced Polarization (TDIP). TDIP responses measured on the surface are affected by the physical properties of the subsurface. Research in TDIP response modeling studies is performed to obtain a quantitative relationship between response to metallic mineral content at subsurface. The relationship can be obtained by forward and physical modelling. The forward modeling produces a curve that connects TDIP response to the subsurface parameters and an array. The laboratory-scale physical model is performed on the sand-box size (200x100x70) cm3 by varying iron-ore content in a sphere target. TDIP response measurements on physical models is done using Dipole-dipole and Wenner configuration. The relationship between the TDIP response and metal mineral content is obtained by comparing the results of measurements on physical modeling and forward modelling. There is good appropriatement between the theoretical curves and measuring results of the physical modelling. The greater of iron-ore content on the target, increasing in the TDIP response.]]>
<![CDATA[A Comparison between Drilling and Standard Penetration Test (SPT) Data to the Electrical Resistivity Sounding with Schlumberger Configuration in UNS Area ]]>
<![CDATA[Sinta Nur Rizqi Listanti]]>;
<![CDATA[Darsono Darsono]]>;
<![CDATA[Yusep Muslih Purwana]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 2 (2018): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (866.569 KB)
|
DOI: 10.13057/ijap.v8i2.17962
<![CDATA[The geophysics test using electrical resistivity method has been conducted in the area of UNS Campus to indicate the lithological of subsurface. This method is categorized as a Non-Destructive Test (NDT) due to the data acquisition is done at the ground level and no destruction during the test, which is more advantageous than destructive method such as drilling and SPT test. This study was performed with Schlumberger configuration in three location by electrical resistivity sounding. The acquisition data uses Resistivity meter OYO 2119 McOHM-EL with the track length is 100 m, while the data processing use IPI2Win to get a logarithmic graph between distance and resistivity and Origin to obtain graphic of resistivity and SPT. The result of this study indicates that electrical resistivity has a good correlation with SPT data. The electrical resistivity graph shows a linear increase along with increment of the depth, which is similar to the SPT graph. The slope difference at the first location is 2.44±1,197, the second location is 2.028±0.822, and the third location is 0.622±0.735.]]>
<![CDATA[Crystal Structures and Magnetic Properties of Polyethylene Glycol (PEG-4000) Encapsulated Co0.5Ni0.5Fe2O4 Magnetic Nanoparticles ]]>
<![CDATA[Edi Suharyadi]]>;
<![CDATA[Lintang Griyanika]]>;
<![CDATA[Joko Utomo]]>;
<![CDATA[Ayu Kurnia Agustina]]>;
<![CDATA[Takeshi Kato]]>;
<![CDATA[Satoshi Iwata]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 2 (2018): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (629.629 KB)
|
DOI: 10.13057/ijap.v8i2.22108
<![CDATA[Nanocrystalline mixed spinel ferrite of Co0.5Ni0.5Fe2O4 magnetic nanoparticles (MNPs) has been successfully synthesized by coprecipitation method and encapsulated by PEG-4000 with various concentrations. X-Ray Diffraction (XRD) patterns showed that nanoparticles contained Co0.5Ni0.5Fe2O4 spinel ferrite with crystallite size of 14.9 nm. After PEG-4000 encapsulation particles size decreased became 7.7 nm. Interaction Co0.5Ni0.5Fe2O4 nanoparticles with long chain PEG-4000 caused the crystal growth trap. Lattice parameter and X-Ray density have no significant difference after encapsulated PEG-4000. The coercivity (??) of Co0.5Ni0.5Fe2O4 was 214 Oe. The ?? decreased after PEG-4000 encapsulation became 127 Oe, which is due to the decrease of crystallite size. The maximum magnetization (Mmax) of Co0.5Ni0.5Fe2O4 was 12.0 emu/g, and decreased after PEG-4000 encapsulation to 11.7 emu/g, because PEG-4000 is paramagnetic. After the concentration of PEG-4000 increased, then the amount of paramagnetic material increase which lead maximum magnetization decrease.]]>
<![CDATA[Interpretasi Struktur Bawah Permukaan Jalur Sesar Opak Berdasarkan Model Suseptibilitas dan Second Vertical Derivative dengan Metode Geomagnet ]]>
<![CDATA[Desi Novi Dayana]]>;
<![CDATA[Nugroho Budi Wibowo]]>;
<![CDATA[Denny Darmawan]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 2 (2018): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (829.047 KB)
|
DOI: 10.13057/ijap.v8i2.21428
<![CDATA[Tujuan dari penelitian ini adalah untuk mengetahui struktur bawah permukaan jalur Sesar Opak berdasarkan model suseptibilitas dan SVD dengan metode geomagnet. Pengambilan data dilakukan menggunakan Proton Precession Magnetometer Geometric tipe G-856 dengan 77 titik pengukuran dan jarak antar titik pengukuran +2 km. Pengolahan data dilakukan melalui koreksi variasi harian, koreksi IGRF, SVD, dan reduksi ke kutub. Pemodelan dilakukan dengan menganalisis anomali medan magnet yang telah direduksi ke kutub. Hasil pemodelan solid model menunjukkan bahwa Formasi Semilir dengan nilai suseptibilitas (0 – 100) ×10-3, Formasi Merapi Muda dengan nilai suseptibilitas (0 – 2) ×10-3, dan Formasi Nglanggran dengan nilai suseptibilitas (0,6 – 70) ×10-3. Hasil pemodelan SVD dan solid model menunjukkan keberadaan Sesar Opak.]]>
<![CDATA[Numerical Analysis of Fusion Cross Section of (_^16)O+(_^16)O by Using The Modified Glas-Mosel Formula ]]>
<![CDATA[Yacobus Yulianto]]>;
<![CDATA[Zaki Su'ud]]>
<![CDATA[ INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 2 (2018): October ]]>
Publisher : <![CDATA[Department of Physics, Sebelas Maret University ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (513.529 KB)
|
DOI: 10.13057/ijap.v8i2.21820
<![CDATA[One of the interesting topics in nuclear reactions is a study about reaction cross section between the interacting nuclei. For calculating fusion cross section, the Glas-Mosel formula has been proven successfully in explaining the experimental results of fusion cross section. In this study, the fusion cross sections of O16+O16 reaction were calculated by using modified Glas-Mosel formula. The energies were set at 10≤?≤40 MeV. The potential of interacting nuclei was approached by using Woods-Saxon potential. In numerical process, the differential equations were solved by using finite different method and optimization process was performed by using Nelder-Mead method. Good agreement between the experimental and this study results has been achieved successfully. Referring those results above, it can be indicated that the modified Glas-Mosel formula has good capability to explain the experimental results of fusion reaction of light nuclei. It can be a useful tool in explaining the experimental results or in predicting fusion cross section of light nuclei.]]>
