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All Journal Maspari Journal JOURNAL OF COASTAL DEVELOPMENT Jurnal Pembangunan Wilayah dan Kota METANA BERKALA FISIKA Jurnal Ilmu Lingkungan YOUNGSTER PHYSICS JOURNAL Sains Tanah Maspari Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) INDONESIAN JOURNAL OF APPLIED PHYSICS Akuatik: Jurnal Sumberdaya Perairan Bina Hukum Lingkungan Bina Hukum Lingkungan
Dwi Purwantoro Sasongko
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences

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Journal : BERKALA FISIKA

 1 
Kajian Teoritis Penentuan Tetapan Planck Menggunakan Model Elektrodinamika Maxwell Zaada Faidullah, Ilmy; Sasongko, Dwi P.; Priyono, Priyono
BERKALA FISIKA Vol 12, No 4 (2009): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Theory of Electromagnetism and Planck constant have important role in the development of light theory. Electromagnetism theory explains the velocity of light is constant and finite because light is phenomenon of propagation of Electromagnetism Wave. Distribution of Planck Radiation that introduces Planck constant also based on the theory of Electromagnetism, however, now light treated like as a particle. Planck constant not only radically changes concept of light but also has be main source of the birth of Modern Physics. An interesting thing to investigate connection between Maxwell equation that well known with concept of classically Physics and Planck constant, a constant that often used in Quantum Mechanics. Deriving Planck constant from Maxwell Equation can be done by understanding study of Radiation Quantization that based on the assumption. First, Electromagnetism wave is on the vacuum space so there is no charge and current. Second, Hamiltonian of Radiation stated by Hamiltonian of Harmonic Oscillation. Third, mass of Photon regarded does not affect Hamiltonian of Radiation because it is difficult to determine rest mass of Photon. Fourth, Dirac postulate used as non commutable multiplication rule of position and momentum coordinate. In this research has obtained an elaborate explanation deriving Planck constant from Maxwell equation that can be shorted as follow. From Maxwell equation will be derived Maxwell wave equation that consist of Vector Potential Fields. Its form similar with Harmonic Oscillation function so Hamiltonian Radiation can be stated as Hamiltonian of Harmonic Oscillation. By Using Dirac postulate, Oscillation Harmonics can be studied in Quantum Mechanic so will be obtained  Planck constant that contained on the Fourier Coefficient Operator.   Keywords : Maxwell Equation, Planck Constant, Fourier Coefficient Operator.
Evaluasi Kinerja Metoda Analisis Pengukuran Neutron (APN) Arifin, Zaenal; Sasongko, Dwi P; Munir, M
BERKALA FISIKA Vol 13, No 1 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Evaluation of Neutron Activation Analysis (NAA) methods performance has been done. The objective is to validate the data form these analysis on the determination of the trace element concentration in the waters and sediments. This evaluation covering test of devices stability, background counting, Figure of Merit (FOM), Critical Level (Lc), Detection Limit (LD), Determination Limit (LQ) and test of quality result. Result show that device in stabil condition  have background counting about 0.0037 to 0.1806 cps, Figure of Merit (FOM) about to 0.0045 to 0.1732 secon. The data result analysis above Critical Level (LC), in LC about 0.07 to 16.42 ppb. Detection Limit (LD) about 0.14 to 32.93 ppb in significant 95% expect Hg obtained LD 1.26 ppb. Determination Limit (LQ) about 0.44 to 100.10 ppb. Test of quality result show that of standardized difference about 15.17% to above 50% and Precision result analysis about 0.01% to 99.00%.   Keywords : NAA Methods, Trace element, devices stability, background counting, Figure of Merit (FOM), Critical Level (Lc), Detection Limit (LD), Determination Limit (LQ) and test of quality result.
Co-Authors Aditya Yoga Syah Putra Agus Setyawan Asep Yoyo Wardaya Brandan Tito Ramadhan Budi Hendrarto Burhanudin Adman Fadilah . Fadilah . FX Adji Samekto Gatot Yulianto HARIADI SISWANTORO Hasti Wahyuni Hefni Effendi Ilmy Zaada Faidullah Imam Baru Raharjo Imas S. Sitanggang, Imas S. Imas Sukaesih Sitanggang Kurniawan Kurniawan M Munir Mohammad, Farid P Purwanto Prathika Andini Goesty Priyono Priyono R. M. Tofan Sastranegara S upriharyono S. Suripin Septian Adhi Nugroho Setia Budi Sasongko Sukirno Sukirno Supriharyono Supriharyono Surjono Hadi Sutjahjo Sutrisno Anggoro Tri Mulyaningsih Wahyu Setiabudi Zaenal Arifin