The finite difference time domain (FDTD) method has been successfully applied to obtain energies and wave functions for two electrons in a quantum dot modeled by a three dimensional harmonic potential. The FDTD method uses the time-dependent Schrdinger equation (TDSE) in imaginary time. The TDSE is numerically solved with an initial random wave function and after enough simulation time, the wave function converges to the ground state wave function. The excited states are determined by using the same procedure for the ground state with additional constraints that the wave function must be orthogonal with all lower energy wave functions. The numerical results for energies and wave functions for different parameters of confinement potentials are given and compared with published results using other numerical methods. It is shown that the FDTD method gives accurate energies and wave functions.
Kompetensi komputasi merupakan salah satu kompentesi utama yang harus dimiliki oleh mahasiswa fisika. Kemampuan komputasi yang meliputi kemampuan menyederhanakan permasalahan yang kompleks, pengenalan pola dalam menyelesaikan permasalahan serta mengeneralisasi pola tersebut untuk meyelesaikan masalah dalam lingkup besar. Oleh karena itu kegiatan ini bertujuan untuk meningkatkan kompetensi komputasi fisika dan kimia mahasiswa fisika. Adapun metode yang digunakan dalam kegiatan ini adalah metode focus discussion group untuk mendeteksi kelemahan serta kekuatan pemahaman masing-masing mahasiswa dalam konsep fisis, kimia dan komputasi. Setelah peserta memahami konsep fisis, kimia dan komputasi maka metode selanjutnya adalah metode praktikum. Luaran dari kegiatan ini adalah tersusunnya modul pelatihan komputasi fisika dan kimia serta tersusunya topic-topik penelitian yang terkait dengan komputasi fisika dan kimia yang dapat dijadikan sebagai topik PKM ataupun topic tugas akhir oleh mahasiswa.
Based on its geographical location, West Nusa Tenggara Province is located in a disaster-prone area. Because generally disaster hazards can occur anywhere with little or no warning, it is very important to be prepared for disaster hazards to reduce the risk of their impacts. One of the most strategic efforts is through learning or training to improve the ability of the community to respond to disasters by creating a Disaster Preparedness School. The purpose of this activity is to realize the implementation of disaster management activities in schools / madrasas. The method used is (a) direct instruction to improve partner understanding related to disaster and disaster mitigation materials, (b) Group Discussion Forum to develop disaster learning modules and (c) simulations to improve disaster response partner skills. This activity will be held in the Qomarul Huda Narmada Forest High School in West Lombok-NTB. The output target of this activity is the formation of an evacuation route map as well as an explanation and the establishment of a disaster learning module that can be used in the learning process. It is hoped that by developing disaster preparedness school programs will contribute effectively to early prevention of disaster hazards.Keywords: Disaster Preparedness School, disaster mitigation, earthquake.
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