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INDONESIA
INDONESIAN JOURNAL OF APPLIED PHYSICS
Published by Universitas Sebelas Maret
ISSN : 20890133     EISSN : 24776416     DOI : -
Core Subject : Science,
Astronomy Energy Materials Science & Nanotechnology 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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Articles 267 Documents
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Desain Beam Shaping Assembly (BSA) berbasis D-D Neutron Generator 2,45 MeV untuk Uji Fasilitas BNCT Desman P. Gulo; Suryasatriya T.; Slamet Santosa; Y. Sardjono
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 02 (2015): IJAP Volume 05 Issue 02 Year 2015
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v5i02.280

Abstract

Boron Neutron Capture Therapy (BNCT) is one of the cancer treatments that are being developed in nowadays. In order to support BNCT treatment for cancer that exists in underneath skin like breast cancer, the facility needs a generator that is able to produce epithermal neutron. One of the generator that is able to produce neutron is D-D neutron generator with 2.45 MeV energy. Based on the calculation of this paper, we found that the total production of neutron per second (neutron yield) from Neutron Generator (NG) by PSTA-BATAN Yogyakarta is 2.55×1011 n/s. The energy and flux that we found is in the range of quick neutron. Thus, it needs to be moderated to the level of epithermal neutron which is located in the interval energy of 1 eV to 10 KeV with 109 n/cm2s flux. This number is the recommendation standard from IAEA. Beam Shaping Assembly (BSA) is needed in order to moderate the quick neutron to the level of epithermal neutron. One part of BSA that has the responsibility in moderating the quick neutron to epithermal neutron is the moderator. The substance of moderator used in this paper is MgF2 and A1F3. The thickness of moderator has been set in in such a way by using MCNPX software in order to fulfill the standard of IAEA. As the result of optimizing BSA moderator, the data obtain epithermal flux with the total number of 4.64×108 n/cm2/s for both of moderators with the thickness of moderator up to 15 cm. At the end of this research, the number of epithermal flux does not follow the standard of IAEA. This is because the flux neutron that is being produced by NG is relatively small. In conclusion, the NG from PSTA-BATAN Yogyakarta is not ready to be used for the BNCT treatment facility for the underneath skin cancer like breast cancer.
Method Comparison of Model Based Tomography and Grid Based Tomography to refine interval velocity Yuninggar Dwi Nugroho; Sudarmaji S
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): IJAP Volume 04 Issue 01 Year 2014
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1170

Abstract

The input data for pre stack time migration and pre stack depth migration is velocity model. The exact velocity model can provide maximum result in seismic section. The best seismic section can minimize possibility of errors during interpretation. Model based and grid based tomography are used to refine the interval velocity model. The interval velocity will be used as input in the pre stack depth migration. Initial interval velocity is obtained from RMS velocityusing Dix formula. This velocity will be refined by global depth tomography method. The global depth tomography method is divided into model based and grid based tomography. Velocity analysis is performed along the horizon (depth model). Residual depth move out is obtained from picking velocity. It is used as input in tomography method. The flat gather is obtained at tenth iteration. The interval velocity that is obtained from tenth iteration has the small errors. Tomography method can provide maximum result on velocity refinement. That is shown by the result that the pre stack depth migration is much better than using initial interval velocity. The pull up effect can be corrected by tomography method.
Perbandingan Survei dan Analisis Data Geolistrik Sounding Daerah Pantai dan Pegunungan Studi Kasus Penyelidikan Air Tanah di Kabupaten Kendal, Jawa Tengah Imam Suyanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): IJAP VOLUME 03 ISSUE 02 YEAR 2013
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1242

Abstract

A geoelectrical method research have been done to find out the presence of aquifer at mountain and coastal area in Kabupaten Kendal, Central java, February 2008 using VES (Vertical Electrical Sounding) method, Schlumberger configuration. 22 measurement location spread out at coastal and mountain area with the 500 meter long each measurement point. Each measurement point presented in resistivity curve and the thick of each detected subsurface layer asa result of Progress III data processing software. From the result of this measurement shown that the aquifer at coastal area defined as confined a aquifer with the range of thickness more than 50 meter thick and the range of resistivity value between 5 – 15 Ohm meter and the eksistence of the detected subsurface layer shown mostly at each sounding point. For the mountainarea, the the deep of the aquifer around hundred meters at the subsurface with the range ofthickness about 10-20 meters with the range of resistivity value 10-80 Ohm meter.
Deteksi Formalin Menggunakan Surface Plasmon Resonance (SPR) Berbasis Nanopartikel Perak sebagai Pengembangan Awal Teknologi Food Safety Muhammad Khoirul Anam; Risma Narindra; Thoyibi T; Kamsul Abraha
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): IJAP VOLUME 03 ISSUE 02 YEAR 2013
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1274

Abstract

The phenomena of surface plasmon resonance (SPR) has been observed. SPR is reflectance curve as a function of incident angle in Kretschmann configuration. Surface plasmon is electromagnetic waves propagation in the interface area between metal and dielectric that can be excited by using attenuated total reflection (ATR) method. The result of experiment explains that the SPR angle on the thin film system of the prism/silver 1 and the prism/silver 2 is (42.8± 0,05)º with the reflectance value 0.32 and 0.44 respectively. On the prism/silver/silver nanoparticle system, it is obtained that SPR angle value is (4,29 ± 0,05) with the reflectance value 0.29 for the silver 1 and 0.31 for the silver 2. After the thin film system is added with 40% of formalin, SPR angle becomes (43,0 ± 0,05)º with the reflectance value 0.44. Then, after the thin film system is added with 100% of formalin, SPR angle becomes (43,2 ± 0,05)ºwith the reflectance value 0.4. The shifting SPR angle shows that SPR have capability as formalin sensor.
Aplikasi Metode Self Potential untuk Pemetaan Sebaran Lindi di Wilayah Tempat Pembuangan Akhir (TPA) Putri Cempo Surakarta Andri Wasis Handoko; D Darsono; D Darmanto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): IJAP VOLUME 06 ISSUE 01 YEAR 2016
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.1792

Abstract

The distribution of leachate and the pattern of fluid flow in Tempat Pembuangan Akhir (TPA) Putri Cempo were mapped by utilizing the Self Potential method. Data acquisition was done before and after the rain with a fixed base techniques with 10 meters interval distance with total number of observations were 78 points for data acquisition. SP Data were processed using Surfer 11 software to generate the isopotential contours. It is found that the leachate distribution anomaly is indicated only for after the rain observation. Interpretation was done by Rao and Ram Babu Theory. The result of vertical spreading of anomalous 1 was found at the depth of the upper end (h) 5.45 meters, the depth of the lower end (H) 17.62 meters and the angle of anomaly (θ) 840 while the anomalous 2 was found at the depth of the upper end (h) 5.45 meters, the depth of the lower end (H) 11.22 meters and the angle of anomaly (θ) 73.70. At the time before the rain, the pattern of fluid flow leading to the eastern part of the research area, while after the rain, the fluid flow coming from two directions, from the west and from the east of the research area leading to the central part of the research area.
Identifikasi Jalur Sesar Opak Berdasarkan Analisis Data Anomali Medan Magnet dan Geologi Regional Yogyakarta Ira Maya Fathonah; Nugroho Budi Wibowo; Yoshaphat Sumardi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): IJAP Volume 04 Issue 02 Year 2014
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i02.4990

Abstract

This research was aimed to know the magnetic field anomaly pattern upon Opak’s fault, to identify the direction of Opak’s fault and the structure of Opak’s fault based on Geomagnetic data. It was conducted in the vicinity of Opak’s fault in Pundong sub-district, Yogyakarta. It used magnetic method which is based on rocks magnetic susceptibility. The data were taken by G-856AX Proton Precision Magnetometer (PPM) using looping method. Data analysis was done using diurnal variation and IGRF correction, reduction to pole, upward continuation and under surface structure modelling. From magnetic field anomaly analysis, it was discovered that magnetic field anomaly on Opak’s fault has -50 nT negative closure in the East, and 100 nT positive closure in the West. According to the result interpretation of 2.5D model on two slices using Mag2DC software, it can be obtained that the under surface structure of Opak’s fault consist of Young Alluvial formation, Nglanggran formation, Semilir formation, Kebo Butak formation, and Wungkal Gamping with various thickness. The location of this Opak’s fault is almost the same with the location of Opak’s fault in Yogyakarta geology map. Opak’s fault around Pundong sub-district is a normal fault directed to N 35º E. The eastern part of the fault has a relatively constant movement, while the western part is relatively moving down.
Optimizing an Octane Number of Motor Gasoline (MOGAS) 91 RON with Blending Methods Ahmad Mustafid Miftahul Huda; Subagjo Wakimin; Selvia Sarungu
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 2 (2017): IJAP Volume 07 ISSUE 02 YEAR 2017
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i2.13002

Abstract

Motor Gasoline (MOGAS) that serves as modifiers thermal energy into mechanical energy with a Research Octane Number (RON) of 91 was produced by mixing (blending) of two components. RON are high is one of MOGAS specifications needed for good engine performance. To obtain a MOGAS with high RON usually needs additional materials, chemical components. In this work we don’t need any additional materials to increasing the RON. In the field of oil and gas blending method is a method that is widely used to acquire new products that are superior and achieve quality standards. The components used in blending these are products with a value of RON 88 and 92. Examination of specific gravity (ASTMD-1298) was conducted to obtain specific gravity (SG) and temperature observations (T), while the ASTMD-86 distillation examination was conducted to determine the components in materials. The results showed that the product specifications in accordance with the existing products on the market. The acquisition of distillate reached 95% with losses of about 3.9%, and the residue of 1.1%.
Back Matter Vol 07 No 01 2017 Mohtar Yunianto
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 1 (2017): IJAP Volume 07 ISSUE 01 YEAR 2017
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i1.19970

Abstract

Modification of Materials and Thickness Layer of Radial Piercing Beamport (RPB) Reflector on Kartini Reactor for Boron Neutron Capture Therapy (BNCT) Octaviana Erawati F; Riyatun R; Suharyana S
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 01 (2015): IJAP Volume 05 Issue 01 Year 2015
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v5i01.270

Abstract

Modification of materials and thicknesses reflector RPB of Kartini reactor has been done to support cancer therapy with BNCT method. Modifications have been investigated by computer simulation method based on software MCNP5. Neutron beam for BNCT must be fulfill the criteria recommended by International Atomic Energy Agency (IAEA), two of which are  n.cm-2.s-1 and  . Before the modification of the neutron beam done, the measurements in the end of the RPB indicate that  n.cm-2.s-1 and  . These conditions were not fulfilling the requirements of the IAEA, so that the modification of the reflector material and thickness layer of RPB should be done. Those modifications were done by varying the materials PbF2, Pb-nat, 209Bi, Ni-nat (95%) and Fe-nat. The simulation result showed if the material Ni-nat (95%) on the thickness 1.5 cm was use as a coating material reflector optimally. The results after the modification showed that  increased 7,54% with the increase amounted to n.cm-2.s-1.  decrease 21,45%, then decreasing the value of       became 1,70.  After the modification the results has not yet fulfill the criteria of the IAEA. Because of the reflector was not the only guide neutron beam. Moderator and filter have not been optimized to deliver results for files that match the criteria of the IAEA for BNCT. Therefore, in future studies modified with the addition of a neutron moderator and also filter is expected to help increasing the quantity of  and decreasing of .
Influence of Sugar Palm Ash Fraction and Resonator Configuration on Acoustic Absorption Performance of Expose Brick Zulfa Kamila R; Iwan Yahya; Utari U
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 01 (2014): IJAP Volume 04 Issue 01 Year 2014
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i01.1160

Abstract

Sound absorption performance optimization of expose brick has been conducted in associated with the fraction of sugar palm ash in its raw material and configuration of Helmholtz resonators inside the brick structure. The testing was conducted experimentally refer to ASTM E-1050-98 standard procedure. In this case there are three variations sugar palm ash fractions of 0%, 5%, and 10%, as well as two array resonator configurations. The results showed that the brick with fraction of 10% sugar palm ash has the best sound absorption performance. As for the configuration of array identical Helmholtz resonator giving better performance improvement at low frequency span than complex resonator structure with coupled cavity where the best performance occur on(376-488) Hz frequency range with the absorption coefficient α of 0.54.

Page 12 of 27 | Total Record : 267

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