Student’s Seminar
Topological insulators and their applications
Speaker:
Alaa Anwar Al-Ghanim
Date: Monday, 22 May 2023
Time: 11:00 a.m.
Location: Bldg. 6/Room 125
Abstract:
Particle therapy is a type of cancer treatment that uses high-energy particles, such as protons or carbon ions, to destroy cancer cells. It is a form of radiation therapy that delivers ionizing radiation in the form of charged particles. Unlike traditional radiation therapy, which uses X-rays or gamma rays, particle therapy delivers highly concentrated doses of radiation to the tumor while sparing surrounding healthy tissue. This allows for more precise and effective treatment with fewer side effects. The concept of particle therapy dates back to the early 20th century, but it was not until the 1990s that the first proton therapy centers were established. Since then, the use of particle therapy is becoming increasingly common for treating various types of cancer. Another advantage of particle therapy is that it has a higher biological effectiveness than traditional radiation therapy. Particle therapy is a relatively new and expensive treatment option, and it is not yet widely available. However, it has shown promising results in clinical trials . Ongoing research and development in particle therapy will likely lead to improved treatment outcomes and greater access to this promising form of cancer treatmentand electronic industry. In this session, I will provide an overview of topological insulators.
Photo-Induced loss of H2 from small hydrides, when is it possible
Speaker:
AHMED AYIDH
Date: Monday, 22 May 2023
Time: 11:15 a.m.
Location: Bldg. 6/Room 125
Abstract:
We have explored the possibility of forming H2 from H2S, CH4, H2O and SiH4 in a series of ab initio calculations. The results show that H2S has a directed and potentially ultrafast pathway that leads toward S and H2. It involves the excited states that are populated with, for example, a two-photon excitation employing 280 nm femtosecond laser pulses. The other hydrides have a more entangled potential energy landscape close to Franck-Condon in the direction of the reaction coordinate that leads to H2 loss whereas the direct loss of a hydrogen atom is favored. We also provide the dynamical implications from the associated conical intersection for the case of the photolysis reaction H2S→H2+S
Unveiling the Mysteries of the Supernova: A Guide to Nuclear Physics
Speaker:
Mohammad Khaled Al-Saif
Date: Monday, 15 May 2023
Time: 11:30 a.m.
Location: Bldg. 6/Room 125
Abstract:
" Supernovae are one of the most cataclysmic events in our universe, producing some of the most extreme conditions that cannot be replicated anywhere on Earth. As a result, these cosmic explosions serve as an outstanding natural laboratory for nuclear physics. The tremendous energy released during a supernova creates an environment that drives elements to densities, temperatures, and pressures beyond those accessible in any laboratory experiment. This permits us to study and extrapolate crucial properties and behaviors of atomic nuclei, such as their formation, evolution, structure, and decay processes under such extreme circumstances. This seminar delves into how supernovae enable us to understand fundamental physical phenomena through the examination of their nuclear remnants and discusses various ways in which nuclear physicists utilize supernovae as a model for their investigations. "
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All faculty, researchers and students are invited to attend.