I would like to extend my warm welcome to all the ANPA members who have gathered in-person and remotely in Florida to exchange ideas, discuss together and learn more on High Energy/Nuclear/Particle Physics. The 6th ANPA2023 Conference would have a lot of responsibilities to shoulder especially covering a broad range of energy from perhaps KeV to TeV scales and I would like to express an early thanks to all the members, especially the members of High Energy/Nuclear/Particle Physics. The vision of ANPA is beyond just providing the platform, but also to inspire future generation of Nepali physicists all over the globe. I wish that the 6th ANPA2023 will be successful and enjoyable to all the participants and stimulate young High Energy/Nuclear/Particle Physicists to continue active work for the future physics. Let’s Physics!”
A brief overview of the status, achievements and frontiers of low energy nuclear physics.
Abstract:
With rapidly growing landscape of accessible nuclei at various facilities worldwide and fueled by the advent of multi-messenger astronomy, advances in nuclear theory, sophisticated modeling, and computing resources, the objective of comprehensive understanding of atomic nucleus and its role in cosmos is now within reach. In this overview talk, I would provide the current status of low energy nuclear physics with some recent exciting results from the past decade. I will also present a brief overview of the facilities available for low energy nuclear physics research and conclude with some frontiers for the field.
Please look below for detailed schedule.
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Abstract Number: ANPA2023-N00081 Presenting Author: Rajendra Neupane Presenter's Affiliation: Central Department of Physics Location: Central Department of Physics, T.U., Nepal Show/Hide Abstract We performed a temporal and spectral study of emission from blazar OJ 287 using an XMM-Newton observation in April 2020. Among the various fitted models used to characterize the spectrum, (log-parabola+black-body) model fits the spectrum best which indicates that the observed X-ray emission is a result of a combination of synchrotron and thermal emission processes, implying that the overall X-ray emission is driven by both non-thermal and thermal mechanisms. The value of fractional variability of 2.073±0.037 indicates that the source is highly variable. The results of our analysis show a significantly higher net count rate of 5.651±0.025. Despite the much shorter exposure time of just 9 ks in April 2020, compared to the 53 ks and 19 ks exposure time for the 2015 and 2018 observations respectively, the effect of the flare is still apparent in the higher net count rate (5.651±0.025) obtained from the more recent observations in April 2020.
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Abstract Number: ANPA2023-N00082 Presenting Author: Saroj Pandeya Presenter's Affiliation: Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu 44613, Nepal Location: Central Department of Physics, T.U., Nepal Show/Hide Abstract We have employed the self-consistent kinetic theory to study the linear dispersion relation of_x000D_
ion acoustic waves in four-component plasma consisting of nonextensive hot electrons,_x000D_
Maxwellian cold electrons, positive ions, and dust particles. The dust charging process with_x000D_
the modified ion acoustic wave damping, as well as its unstable mode, has been graphically_x000D_
illustrated. It is found that the dust charging mechanism depends on the density of hot_x000D_
electrons, the degree of nonextensive electron distribution, and the temperature ratio of hot_x000D_
to cold electrons. It is shown that the damping and instability rates of ion acoustic waves due_x000D_
to dust charge fluctuations explicitly depend on the choice of electron distribution and the_x000D_
magnitude of dusty plasma parameters. In addition, we have studied the ion acoustic Landau_x000D_
damping in the absence of dust particles. It is found that the weak damping region broadens,_x000D_
while the strong damping region shrinks and is shifted toward the short wavelength region_x000D_
for the increase in the temperature ratio of hot to cold electrons.
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Abstract Number: ANPA2023-N00083 Presenting Author: Joseph Maerovitz Presenter's Affiliation: Florida International University Title: Recent Developments in the Non- Perturbative Structure of the Pion Location: Florida International University, FL, USA Show/Hide Abstract Several works have attempted to understand the pion valence partonic distribution function (PDF), both experimentally and theoretically. Questions remain, especially for the high x region. Using the recently developed Residual Field Model, we calculate the pion valence PDF in the range of 0.1 |
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Abstract Number: ANPA2023-N00085 Presenting Author: Som Nath Paneru (Invited) Presenter's Affiliation: Los Alamos National Laboratory_x000D_ Los Alamos, New Mexico, United States Title: A brief overview of the status, achievements and frontiers of low energy nuclear physics. Location: Virtual Presentation Show/Hide Abstract With rapidly growing landscape of accessible nuclei at various facilities worldwide and fueled by the advent of multi-messenger astronomy, advances in nuclear theory, sophisticated modeling, and computing resources, the objective of comprehensive understanding of atomic nucleus and its role in cosmos is now within reach. In this overview talk, I would provide the current status of low energy nuclear physics with some recent exciting results from the past decade. I will also present a brief overview of the facilities available for low energy nuclear physics research and conclude with some frontiers for the field.
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Abstract Number: ANPA2023-N00086 Presenting Author: Arif Ali Presenter's Affiliation: M. Tech structural Engineering Title: Interpretation of superposition of electrons in Four Spatial Dimensions Location: Virtual Presentation Show/Hide Abstract Quantum mechanics is a fascinating area of physics that deals with the behavior of particles at the atomic and subatomic level. One of the key concepts in quantum mechanics is the idea of superposition, which states that a particle can exist in multiple states simultaneously until it is observed. The interpretation of electrons in three-dimensional space has been the subject of much debate among physicists, and in recent years, there has been growing interest in the idea that electrons are one-dimensional entities in four spatial dimensions. This paper explores the theoretical framework for this idea and the evidence for electron superposition in four spatial dimensions, as well as its potential implications for our understanding of quantum mechanics and the development of new technologies.
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Abstract Number: ANPA2023-N00084 Presenting Author: Anita Mishra Presenter's Affiliation: Central Department of Physics, Tribhuvan University Location: Virtual Presentation Show/Hide Abstract The natural radiation emitted by gamma-emitting radionuclides in Earth's crust poses a potential threat to human health. Therefore, it is crucial to assess the vertical distribution of radionuclides in soil to understand their mobility and distribution in soil. In this study, we used in-situ gamma ray spectrometry to measure the concentrations of natural radionuclides (40K, 238U and 232Th) in soil at eight selected locations between Kathmandu and Makawanpur. The measurements were taken at 10 cm intervals up to a depth of 50 cm. Our results show that the average dose rates and average concentrations of 40K, 238U and 232Th in the soil profiles range from 84.4 to 246.0 nGy/h, 1.4 to 9.2%, 4.7 to 10.6 ppm, and 12.6 to 43.3 ppm respectively. These values are higher than the world average. We also observed a homogeneous depth distribution of natural radionuclides. To understand the behavior of radionuclides, we calculated activity ratios. The Th/U, Th/K, and U/K ratios of the studied soil depth profiles suggest that they are environmental profiles. Furthermore, we found that the activity ratios were approximately constant in the soil profiles, indicating that the radionuclides have the same geochemical origin. In conclusion, our study provides insights into the vertical distribution of natural radionuclides in soil between Kathmandu and Makawanpur Nepal. Our findings highlight the importance of monitoring and managing natural radiation sources to protect human health and the environment.
Keywords: Primordial radionuclides, vertical distribution, gamma spectrometry, Nepal
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