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Indonesian Journal of Physics最新文献

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Perturbative and Non-perturbative Aspects of the Chern-Simons-Witten Theory chen - simons - witten理论的微扰与非微扰方面
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2008.19.1.4
A. Y. Wardaya, Freddy P. Zen, J. Kosasih, Triyanta Triyanta
{"title":"Perturbative and Non-perturbative Aspects of the Chern-Simons-Witten Theory","authors":"A. Y. Wardaya, Freddy P. Zen, J. Kosasih, Triyanta Triyanta","doi":"10.5614/itb.ijp.2008.19.1.4","DOIUrl":"https://doi.org/10.5614/itb.ijp.2008.19.1.4","url":null,"abstract":"We investigate a relation between non-perturbative and perturbative cases in the 2+1 dimensional Chern-Simons-Witten (CSW) theory for G = E6 gauge group. In the perturbative case, we calculate the vacuum expectation value (VEV) of an unknotted Wilson loop operator up to order 1/k3 (k is a coupling constant). The result above is proved to be identical to the polynomial invariant E0 (ρ) in the non-perturbative case at the same order of expansion.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84440394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Resistivity Imaging of Mataloko Geothermal Field By Mise-Á-La-Masse Method 利用Mise-Á-La-Masse方法对Mataloko地热田进行电阻率成像
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2011.22.2.3
E. Mustopa, W. Srigutomo, D. Sutarno
{"title":"Resistivity Imaging of Mataloko Geothermal Field By Mise-Á-La-Masse Method","authors":"E. Mustopa, W. Srigutomo, D. Sutarno","doi":"10.5614/itb.ijp.2011.22.2.3","DOIUrl":"https://doi.org/10.5614/itb.ijp.2011.22.2.3","url":null,"abstract":"Mise-á-la-masse (MAM) measurement has been carried out in the Mataloko geothermal field, Flores, East Nusa Tenggara. The survey was conducted along 16 survey lines in a radial configuration to collect 176 sounding sites. The purpose of the measurement is to image a promising reservoir zone and to correlate the results with the previous geosciences surveys for locating the best drilling target. Three-dimensional (3D) inversion scheme was applied to interpret MAM data. The subsurface resistivity structure obtained from 3D inversion result shows that a low resistivity (1 − 10 ohm.m) structure is widely distributed in the southwest and northeast of the well MT-3/MT-5 at the depth 0 − 100 m. On the other hand, in the deeper part of the survey area, it is recognized that a resistivity in the western part is lower than in the eastern part of the area. The fluid flow tests of well MT-5 produced dry saturated steams of 19.3, 12.6 and 17.4 ton/h at wellhead pressures of 4.0, 6.0, and 5.0 kscg, respectively.  Furthermore, the fluid has high enthalpies whose values are 2746, 2755, 2763, 2768, and 2771 kJ/kg at wellhead pressure of 4.0, 5.0, 6.0, 7.0, and 7.5 kscg, respectively. The incorporation of MAM data analyses results with the geosciences data makes it possible to recommend the location of the best target for the drilling site.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81499805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Magnetic Anisotropy and the Paleosecular Variation Record in Stalagmites from Njirak Cave, East Java: The Effect of Detrital Magnetite Emplaced in Small Cavities by Flooding Events 东爪哇Njirak洞石笋磁性各向异性与古长期变化记录:洪水事件对小洞内碎屑磁铁矿的影响
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2009.20.3.4
S. Bijaksana, S. Zulaikah, J. Hodych
{"title":"Magnetic Anisotropy and the Paleosecular Variation Record in Stalagmites from Njirak Cave, East Java: The Effect of Detrital Magnetite Emplaced in Small Cavities by Flooding Events","authors":"S. Bijaksana, S. Zulaikah, J. Hodych","doi":"10.5614/itb.ijp.2009.20.3.4","DOIUrl":"https://doi.org/10.5614/itb.ijp.2009.20.3.4","url":null,"abstract":"Magnetic anisotropy and remanence were measured for 33 samples from the axis of two stalagmites from Njirak Cave in East Java. All 33 samples were stepwise demagnetized with alternating fields, but only 16 were stable enough to yield reliable characteristic remanence directions. These directions differ, especially in declination, from the present Earth’s field direction and agree for samples of about the same age from both stalagmites, suggesting that the Earth’s field at Njirak Cave maintained a declination averaging 23° and an inclination averaging −23° for most of the past 2,500 years. Anisotropy of magnetic susceptibility is high, averaging 5.8%. The minimum susceptibility axes are nearly horizontal with scattered declinations; whereas the maximum susceptibility axes tend to be steeply inclined (average inclination is 51°). This implies that the long axes of the mainly multi-domain magnetite grains tend to be steeply inclined (rather than horizontal, as expected if the magnetite were in horizontal detrital layers). We suggest that this is due to the magnetite being in flood-emplaced detritus adhering to the steeply-inclined sides of small (2 to 5 mm) cavities that cut across and are sealed off by the stalagmites’ horizontal calcite growth layers. Steeply inclined maximum susceptibility axes should help detect such stalagmites, whose quality of paleosecular variation record may be lowered by magnetite-bearing cavities.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81701009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design Study of Thorium Cycle Based Long Life Modular Boiling Water Reactors 基于钍循环的长寿命模块化沸水堆设计研究
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2011.22.4.7
Nuri Trianti, Z. Su'ud, E. Riyana
{"title":"Design Study of Thorium Cycle Based Long Life Modular Boiling Water Reactors","authors":"Nuri Trianti, Z. Su'ud, E. Riyana","doi":"10.5614/itb.ijp.2011.22.4.7","DOIUrl":"https://doi.org/10.5614/itb.ijp.2011.22.4.7","url":null,"abstract":"Design study of long life (cycle) Boiling Water Reactor, which can be operated for 20-30 years of operation time without the necessity of refuelling during that period, has been performed. In shown in the previous study Th232-U233 cycle based fuel has potential for longer operation time in the thermal reactor domain. To increase reactor operation time and minimize excess-reactivity burnable poison may be used. Protactinium (Pa-231), Np-238, or gadolinium has good properties for such purpose. Here based on the previous study we select Protactinium and Gadolinium poisons to be used in the present study. Optimizations the content of 231Pa in the core enables the BWR core to sustain enough reactivity for long period of time with reasonable burn-up reactivity swing. Based on the optimization of fuel element composition (Th and Pa) in various moderation compositions can be achieved reactor core with longer operation time, 20 ~ 30 years operation without fuel shuffling or refuelling. Similarly Gadolinium has been successfully used to extend refuelling time and reduce excess reactivity during burnup period for both oxide fuel and nitride fuel.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87711660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Interdiffusion of InxGa1-xAs/InP Quantum Well Structures Induced by Proton Implantation 质子注入诱导InxGa1-xAs/InP量子阱结构的相互扩散
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2009.20.1.1
P. Gareso
{"title":"Interdiffusion of InxGa1-xAs/InP Quantum Well Structures Induced by Proton Implantation","authors":"P. Gareso","doi":"10.5614/itb.ijp.2009.20.1.1","DOIUrl":"https://doi.org/10.5614/itb.ijp.2009.20.1.1","url":null,"abstract":"We have investigated the atomic intermixing of InxGa1-xAs/InP quantum well structures induced by proton implantation using photoluminescence. Photoluminescence results showed that energy shift was systematically increased as doses increased. As the dose further increased, Saturation in energy shift was observed. At elevated temperature irradiation revealed that the magnitude of the energy shift decreased as the irradiation increased followed by a broadening of the PL linewidth and reduction of the PL intensity. This indicated that dynamic annealing and mobility of the defects play an important role in the type and concentration of residual defects.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84172464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anneal Temperature Effect on Crystallite Size and Electric Conductivity of LiMn2O4 退火温度对LiMn2O4晶粒尺寸和电导率的影响
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2009.20.1.3
K. Basar, Xianglian Xianglian, Sainer Siagian, Koutarou Ohara, T. Sakuma, Haruyuki Takahashi, O. Abe, N. Igawa, Y. Ishii
{"title":"Anneal Temperature Effect on Crystallite Size and Electric Conductivity of LiMn2O4","authors":"K. Basar, Xianglian Xianglian, Sainer Siagian, Koutarou Ohara, T. Sakuma, Haruyuki Takahashi, O. Abe, N. Igawa, Y. Ishii","doi":"10.5614/itb.ijp.2009.20.1.3","DOIUrl":"https://doi.org/10.5614/itb.ijp.2009.20.1.3","url":null,"abstract":"Powder samples of LiMn2O4 have been prepared by solid state reaction of LiOH and MnO2. Neutron scattering experiments at room temperature and conductivity measurement have been performed on the samples. Anneal temperature effect on the crystallite size and electric conductivity of LiMn2O4 is analyzed. The average crystallite size is obtained from the full width at half maximum (FWHM) of Bragg lines using Scherrer equation. The average crystallite size increases with the increase of anneal temperature. Activation energy and conductivity prefactor increase with anneal temperature.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85345188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Alkali Compound on Morphology and Luminescence Intensity of Europium-doped Yttria
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2009.20.3.1
Astuti Astuti, M. Abdullah, K. Khairurrijal
{"title":"Effect of Alkali Compound on Morphology and Luminescence Intensity of Europium-doped Yttria","authors":"Astuti Astuti, M. Abdullah, K. Khairurrijal","doi":"10.5614/itb.ijp.2009.20.3.1","DOIUrl":"https://doi.org/10.5614/itb.ijp.2009.20.3.1","url":null,"abstract":"Luminescent particles of europium-doped yttria (Y2O3:Eu) have been synthesized by heating nitrous precursors in a solution of polyethylene glycol (PEG) matrix containing alkali compound (LiOH, NaCl, KCl, and CaCl2). High luminescence intensity at around 612 nm contributed by electron transitions in Eu3+(5D0 → 7F0, 5D0  → 7F1,5D0 → 7F2, and 5D0 → 7F3) were observed. The highest intensity was observed in samples prepared using Li compound, but he smallest particle size was observed in samples prepared using Ca compound. This approach is promising for production of submicrometer down to nanometer-sized Y2O3:Eu particles that have both small in particle sizes and high luminescence intensity which is potential for use in development of luminescence ink that can be adapted to the current ink jet printing technology.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76725493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Voltage Bias at MEH-PPV Layer on SPR Wavelength observed during in-situ Measurement Method in Polymer Light Emitting Diode MEH-PPV层电压偏置对聚合物发光二极管原位测量中SPR波长的影响
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2011.22.1.2
H. Hendro, M. Djamal, R. Hidayat, D. Kurnia, B. Buchari
{"title":"Effect of Voltage Bias at MEH-PPV Layer on SPR Wavelength observed during in-situ Measurement Method in Polymer Light Emitting Diode","authors":"H. Hendro, M. Djamal, R. Hidayat, D. Kurnia, B. Buchari","doi":"10.5614/itb.ijp.2011.22.1.2","DOIUrl":"https://doi.org/10.5614/itb.ijp.2011.22.1.2","url":null,"abstract":"The shifting of surface plasmon resonance (SPR) wavelength has been observed during in situ measurement in polymer light emitting diode (pLED). Examination is performed using an pLED sample which has an ITO/PEDOT:PSS/MEH-PPV/Au structure. When the voltage bias is increased from 0 to 9 volt the SPR wavelength shifts from 612 nm to 628 nm and the absorption curve shifts to lower absorbance value. From the theoretical analysis, it can be understood that the change of the SPR dip and the absorption curves correspond to the change of dielectric constant of the MEH-PPV layer. These results show that SPR wavelength depends on the metal and air dielectric constant as well as on the MEH-PPV layer. These results also imply that the SPR wavelength being evaluated can be controlled by varying the voltage bias.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83073096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Marine Seismic Tomography for Detecting Fracture and Void of Subsurface Seabed : a Theoretical Framework Development and Application of Wide-Band Fresnel Tomography 海底裂缝空洞探测的海洋地震层析成像:宽带菲涅耳层析成像的理论框架、发展与应用
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2008.19.4.2
B. Nurhandoko, F. Ambia, Kaswandhi Triyoso, M. Choliq, Mahatman L. Budi, A. Suhendi, Wahyu E. Abdianto
{"title":"Marine Seismic Tomography for Detecting Fracture and Void of Subsurface Seabed : a Theoretical Framework Development and Application of Wide-Band Fresnel Tomography","authors":"B. Nurhandoko, F. Ambia, Kaswandhi Triyoso, M. Choliq, Mahatman L. Budi, A. Suhendi, Wahyu E. Abdianto","doi":"10.5614/itb.ijp.2008.19.4.2","DOIUrl":"https://doi.org/10.5614/itb.ijp.2008.19.4.2","url":null,"abstract":"Fracture as well as void can generate unstable structure in offshore building. We use seismic tomography based on scattering wave instead of conventional raypath seismic tomography. Conventional raypath tomography usually needs dense source-receiver configuration as well as wide-angle measurement. Therefore, it will be high cost in field data acquisition. We propose scattering wavepath tomography by means of Fresnel interpolated wavepath (FIW) wide-band inversion. FIW is an interpolation between imaginary part of Rhytov scattering wavepath and raypath. Then, FIW is combined with wide band inversion procedure to handle sparseness configuration of measurement. By this method, smooth constraint is implemented more naturally by based on wave's spectrum. In this paper, we showed some applications of Wide-band inversion of FIW tomography in imaging fracture and void in marine carbonate sea bed.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85713831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Preliminary design study of Long-life Gas Cooled Fast Reactor With Modified CANDLE Burnup Scheme 改进CANDLE燃耗方案的长寿命气冷快堆初步设计研究
Indonesian Journal of Physics Pub Date : 2016-11-03 DOI: 10.5614/itb.ijp.2009.20.4.3
Nur Asiah A, Merry Yanti, Z. Su'ud, Menik A., H. Sekimoto
{"title":"Preliminary design study of Long-life Gas Cooled Fast Reactor With Modified CANDLE Burnup Scheme","authors":"Nur Asiah A, Merry Yanti, Z. Su'ud, Menik A., H. Sekimoto","doi":"10.5614/itb.ijp.2009.20.4.3","DOIUrl":"https://doi.org/10.5614/itb.ijp.2009.20.4.3","url":null,"abstract":"In this paper, preliminary design study of Gas Cooled Fas Reactors with Natural Uranium as Fuel Cycle Input has been performed. Gas Cooled Fast Reactor is slightly modified by employing modified CANDLE burnup scheme so that it can use Natural Uranium as fuel cycle input. The natural uranium is initially put in region 1, after one cycle of 10 years of burn-up it is shifted to region 2 and the region 1 is filled by fresh natural uranium fuel. This concept is basically applied to all regions. In this case the system has been applied to many power level which results relatively flexible discharge burn-up level up from about 20%HM to 30 %HM.","PeriodicalId":13535,"journal":{"name":"Indonesian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75809562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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