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All Journal Geo Media: Majalah Ilmiah dan Informasi Kegeografian Jurnal Sains Dasar Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA ASEAN Journal on Science and Technology for Development Jurnal Ilmu Fisika dan Terapannya (JIFTA)
Yosi Aprian Sari
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mathematics Physics

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STUDI INTERAKSI DUA NUKLEON DAN FENOMENA KRITIS POTENSIAL YUKAWA INTERACTION STUDY OF TWO NUCLEONS AND CRITICAL PHENOMENON OF THE POTENTIAL YUKAWA Bima Anang Dwijaya; R. Yosi Aprian Sari
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 6, No 4 (2017): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui nilai energi ikat inti pada interaksi dua nukleon dalam besaran komputasi (tak bersatuan), mengetahui hubungan antara jangkauan interaksi nukleon (1/α)terhadap nilai konstanta kopling (λ) dan mengetahui hubungan antara (αc) sebagai fungsi (l). Penelitian ini menggunakan persamaan Schrodinger yang mengandung potensial efektif (potensial Yukawa dan potensial sentrifugal). Metode yang digunakan untuk penyelesaian persamaan Schrodinger di penelitian ini adalah metode beda hingga (finite difference method) dan metode bagi dua (bisection method) untuk menentukan swanilai sebagai nilai energi ikat inti. Hasil penelitian ini menunjukkan bahwa semakin besar nilai konstanta kopling (λ) pada bilangan kuantum l=0, maka semakin besar pula jangkauan interaksi antar nukleon (1/α). Pada l = 0 untuk λ = 1, 2, 3, 4, 5 secara berurutan adalah -5.5706×10-5, -3.9383×10-5, -4.2967×10-5, -3.6282×10-5, -5.6721×10-5. Pada l = 1 untuk nilai λ= 2, 3, 4, 5 secara berurutan adalah -2.8020×10-4, -1.6167×10-4, -3.6391×10-4, -2.7500×10-4. Pada l = 2 untuk λ = 3, 4, 5 secara berurutan adalah -3.1003×10-4, -4.7158×10-4, -4.7541×10-4. Pada l = 3 untuk λ = 4, 5 secara berurutan adalah -5.8623×10-4, -3.8635×10-4. Pada l = 4 untuk λ =5  adalah -1.1960×10-3. Pada konstanta kopling (λ) tetap, nilai kritis (αc) menurun secara eksponensial terhadap berbagai nilai bilangan kuantum momentum sudut (l) dengan fungsi αc(l) = λ[A1 exp(-l/B1)+ A2 exp (-l/B2)] dengan A1=0.83227, B1=0.41485, A2=0.00954 dan B2=0.04329. Kata kunci: potensial Yukawa, energi ikat, nukleon AbstractThis study aims to determine the value of the nucleus binding energy on the interaction of two nucleons in the unit of computing (non dimensionless). The second aim is to determine the relation between the range of interaction of nucleons (1 / α) to the value of coupling constants (λ). The last is to determine the relation between (αc) as a function of (l).This study uses the Schrodinger equation containing effective potential (Yukawa potential and centrifugal potential). The method used to solve the Schrodinger equation in this study the finite difference method and bisection method to determine eigenvalue as a nucleus binding energy.The results of this study showed that the greater the value of the coupling constants (λ) on the quantum number l = 0, the greater the range of interactions between nucleons (1 / α). At l = 0 for λ = 1, 2, 3, 4, 5 the range of interactions are:  -5.5706×10-5, -3.9383×10-5, -4.2967×10-5, -3.6282×10-5, -5.6721×10-5  respectively , at l = 1 to the value λ = 2, 3, 4, 5 the range of interactions are: -2.8020×10-4, -1.6167×10-4, -3.6391×10-4, -2.7500×10-4 respectively, at l = 2 for λ = 3, 4, 5 the range of interactions are: -3.1003×10-4, -4.7158×10-4, -4.7541×10-4 respectively, at l = 3 for λ = 4, 5 the range of interactions are -5.8623×10-4, -3.8635×10-4 respectively, at l = 4 for λ = 5 is -1.1960×10-3. With a constant the coupling constants (λ), the critical value (αc) decreases exponentially with respect to various values of the angular momentum quantum number (l) with the function αc (l) = λ [A1 exp (-l / B1) + A2 exp (-l / B2)] where A1=0.83227, B1=0.41485, A2=0.00954 and B2=0.04329.
PERKIRAAN POSISI DAN KEDALAMAN TITIK CURIE PANAS BUMI BERDASARKAN DATA MAGNETIK SATELIT MENGGUNAKAN METODE ANALISIS SPEKTRAL 2D DI SEKITAR GUNUNG LAWU Widiaji, Fatah Rizki; Sari, Yosi Aprian
Jurnal Ilmu Fisika dan Terapannya Vol 13, No 1 (2026): Jurnal Ilmu Fisika dan Terapannya (JIFTA)
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jifta.v13i1.27145

Abstract

Penelitian ini bertujuan untuk menentukan kedalaman titik Curie untuk mengestimasi panas bumi di sekitar Gunung Lawu pada koordinat -7,309o LS sampai -8,035o LS dan 110,793o BT sampai 111,562o BT dengan luas sekitar 85 km x 81 km, dengan menggunakan metode Analisis Spektral 2D berbasis data magnetik. Gunung Lawu merupakan lokasi yang memiliki potensi panas bumi yang menarik untuk diteliti dengan potensi diperkirakan sekitar 137 MW dengan cadangan terduga sebesar 195 MW. Kedalaman titik Curie dan Heatflow merupakan indikator penting untuk identifikasi panas bumi, karena dapat mengetahui kondisi termal dan distribusi panas di bawah permukaan. Data yang digunakan berupa data anomali medan magnet satelit yang berasal dari Web EMAG2 v3 dengan resolusi 2 arc- minute. Analisis Spektral 2D dilakukan untuk memperoleh kedalaman atas, kedalaman pusat, kedalaman titik Curie, dan Heatflow pada tiap bagian dari data sebaran variasi anomali magentik. Hasil penelitian menunjukkan bahwa kedalaman titik Curie di wilayah studi berkisar antara 30,814 km hingga 62,514 km dengan nilai rata-rata 45,541 km sedangakn nilai Heatflow berkisar antara 23,194 mWm-2 hingga 47,055 mWm-2 dengan nilai rata-rata 33,477 mWm-2. Wilayah sekitar Gunung Lawu memiliki kedalaman titik Curie yang relatif dalam dan Heatflow yang rendah yang mengindikasikan potensi panas bumi yang rendah. Sebaliknya, di wilayah sebelah Utara dan Barat Gunung Lawu dengan jarak 10-30 km dari Gunung Lawu menunjukkan kedalaman yang lebih dangkal dan Heatflow lebih tinggi. Dengan demikian, metode yang digunakan terbukti efektif dalam mengidentifikasi dan mengestimasi zona prospektif panas bumi berdasarkan distribusi kedalaman titik Curie dan Heatflow.
Land-cover changes and microclimate risks around Yogyakarta International Airport R. Muhammad Syarif Abdurrahman; R. Yosi Aprian Sari
Geomedia Majalah Ilmiah dan Informasi Kegeografian Vol. 24 No. 1 (2026): Geo Media: Majalah Ilmiah dan Informasi Kegeografian
Publisher : Universitas Negeri Yogyakarta

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Abstract

International airport infrastructure development triggers complex spatial transformations with implications for the balance of regional ecosystems. This study analyzes land-cover change dynamics, surface temperature distribution, vegetation conditions, and microclimate risk zones in the Yogyakarta International Airport (YIA) area using Landsat 8 imagery processed on the Google Earth Engine platform. Methods include Random Forest classification for land cover mapping, Land Surface Temperature (LST) analysis, Normalized Difference Vegetation Index (NDVI) extraction, and Vegetation Stress Index (VSI) compilation as ecological pressure indicators. Results show a 27.2% expansion of forest cover and a 30.4% reduction in water bodies during 2015–2024, contrasting with conventional urban sprawl theory. Surface temperature increased across all land cover classes except built-up areas, which decreased by 2.85°C, with Urban Heat Island formation extending to a radius of 5–7 km. Findings introduce green intensification as a novel reforestation pathway driven by the internalization of mitigation obligations within infrastructure project design. This phenomenon challenges conventional theoretical assumptions and extends existing forest transition frameworks to tropical infrastructure contexts.
Electromagnetics Properties of Non-Relativistic Deuteron in Ground State Sari, R. Yosi Aprian; Darmawan, Denny
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.1802

Abstract

Proton-neutron interaction that makes up deuteron is a mixture state of ?13 dan ?13, which are each associated with a state ?=0, ?=1 and ?=2, ?=1. In the proton-neutron interaction, there are particle exchanges of medium range (1 fm≤?≤2 fm) i.e. scalar meson exchange and the long range (?>2 fm) i.e. one pion exchange. The electromagnetic properties of non-relativistic deuteron in the ground state can be found from the coupled differential equation, such as magnetic dipole moment, 〈?D〉=0.856521?? and electrical quadrupole moment, 〈?D〉=0.00291396 b.
Dinamika Pertukaran Partikel Pada Interaksi Nukleon-Nukleon Dalam Potensial Lokal Aprian Sari, R Yosi; S, Supardi; BSU, Agung; Hermanto, Arief
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v2i02.1282

Abstract

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 chargedπ + ,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.
Co-Authors Adiella Zakky Juneid Afifah Hana Tsurayya Afifah Hana Tsurayya Agung Bambang Setio Utomo Agung Bambang Setio Utomo Aini Rahmatun Ummi Fadlilah Arief Fauzi Arief Hermanto arif gunawan arif gunawan Ariswan Ariswan Azzam Zukhrofani Iman Bima Anang Dwijaya BSU, Agung Denny Darmawan Dian Puspita Eka Putri Gede Sutresna Wijaya Gede Sutresna Wijaya Mitrayana - Noor Rika Safitri R. Muhammad Syarif Abdurrahman S, Supardi Supardi Supardi Trisonia Fitria W. S. B. Dwandaru Warsono Warsono Warsono Widiaji, Fatah Rizki Wipsar Sunu Brams Dwandaru