Superfluid helium - PowerPoint PPT Presentation


Insights on Fragment Spin Generation in Fission: What We Know

Considerable insight was generated from a recent conference on fission, shedding light on crucial theoretical and experimental aspects. Key topics include angular momentum, fission-fragment spin references, and the dynamics of nuclear fission. Theoretical advancements like the TDSLDA model and super

3 views • 41 slides


Status of 1004B Valve Box Repair and Failure Timeline

Detailed account of the repair work on the 1004B Valve Box involving key personnel, safety measures, and timeline of events including a spurious trip of the Quench Interlock System, helium leaks, damage to current leads, and electrical tests. Safety reviews, work planning, and testing procedures are

2 views • 9 slides



The History of the Earth

The Earth, 4.5 billion years old, emerged from a nebula in the Milky Way Galaxy. Gravity led to the condensation of a rotating cloud into the Sun and planets. Over time, lumps collided, forming gas giants, rocky planets, and asteroids. The outer planets attracted hydrogen and helium, while the inner

2 views • 45 slides


Buy HPE 857965-001 10TB 7.2K RPM 3.5in DS SAS 12G Helium Midline HDD

New HPE 857965-001 | 10TB 7.2K RPM 3.5in DS SAS 12G Helium Midline HDD | \u2713 FREE and FAST Ground Shipping across the U.S. | Best Price Guaranteed\n\nProduct Link: \/\/ \/hpe-857965-001-10tb-7-2k-rpm-3-5in-ds-sas-12g-helium-midline-hdd\/

4 views • 1 slides


Geology of the Earth

The evolution of elements in the universe began with the Big Bang, leading to the formation of hydrogen, helium, and heavier elements through stellar processes like fusion and supernovae. Our solar system formed 4.5 billion years ago from a nebula containing a variety of elements. These elements pla

4 views • 44 slides


Exploring the Composition of the Universe

The universe is a vast expanse consisting of various components. Only 0.4% comprises galaxies, while hydrogen, helium, protons, neutrons, and electrons make up 4%. The remaining 96% includes photons, neutrinos, dark matter, and dark energy. Photons, fundamental particles of light, exhibit different

0 views • 30 slides


The Building Blocks of the Universe: Protons, Neutrons, Electrons, Atoms, and Beyond

The universe is composed of just seven different things - protons, neutrons, and electrons- the fundamental building blocks of matter. These particles combine to form atoms like hydrogen, helium, and carbon, which are essential components of our bodies. Understanding the structure and properties of

0 views • 37 slides


Exploring Helium: A Decentralized IoT Network Revolution

Delve into the world of Helium, a blockchain-based IoT network revolutionizing connectivity. Managed by a community of crypto investors, this global network offers innovative solutions for telecom industry challenges through decentralized deployment and mining of HNT tokens.

0 views • 17 slides


Advanced Cryomodule Technology for China's Spallation Neutron Source Upgrade

This article discusses the development of a Double-Spoke Cavity Cryomodule for the China Spallation Neutron Source (CSNS) project. It covers the structure of the cryomodule, integration processes, future work, and details about the CSNS beam parameters and upgrade scheme. The content includes images

0 views • 19 slides


Cool Truth About Helium Shortages

From MRI scanner cooling to global demand and limited sources, explore 10 intriguing facts shedding light on the helium dilemma.

1 views • 8 slides


Understanding HR Diagrams in Astronomy

HR diagrams, named after astronomers Hertzsprung and Russell, depict stars' properties and relationships. The main sequence in the diagram shows where stars lie while fusing hydrogen to helium in their core. Learn about different types of stars and their positions on the diagram. Explore the signifi

0 views • 27 slides


Understanding Radioactivity: A Comprehensive Overview

Radioactivity is the spontaneous decay of unstable atomic nuclei, emitting alpha, beta, or gamma rays. This phenomenon is regulated by Massachusetts laws, with institutions like Clark University licensed for responsible use. Alpha decay involves emission of helium nuclei, while beta decay releases e

0 views • 39 slides


The Noble Gases: Properties, Sources, and Uses

The noble gases, including helium, neon, argon, krypton, xenon, radon, and Oganesson, are characterized by their low reactivity due to a complete electron configuration. They have diverse applications, such as forming inert atmospheres, medical treatments, and lighting technologies. Naturally occurr

0 views • 16 slides


Kinetic Molecular Theory and States of Matter in Physical Pharmacy

The lecture by Assistant Prof. Dr. Fouadalssady in physical pharmacy delves into the Kinetic Molecular Theory, elucidating how gases consist of particles in constant motion with negligible volume. It explains the relationship between kinetic energy, temperature, and the transition from gas to liquid

0 views • 10 slides


Laboratory for Teaching Laser and Atomic Physics at AAPT Conference

Explore the laboratory curriculum for teaching laser and atomic physics developed by Joseph E. Wiest at West Virginia Wesleyan College. The course encompasses electro-optics, quantum models, optics concepts, laser operations, and experimental objectives. Discover the history and applications of vari

0 views • 41 slides


Understanding the Structure and Energy Production of the Sun

Explore the composition and nuclear fusion processes of the Sun through spectroscopy and the generation of energy via nuclear fusion using hydrogen nuclei. Discover how hydrogen and helium make up the majority of the Sun's mass, with multiple elements present in trace amounts. Learn about the steps

0 views • 34 slides


Helium Abundance Variations in MORB vs OIB Geochemistry

In the study of helium abundances in Mid-Ocean Ridge Basalts (MORB) and Ocean Island Basalts (OIB), it is found that degassed MORB has higher concentrations of 3He compared to OIB. Various models and scenarios explain the differences in 3He/4He ratios in different geological settings, such as carbon

1 views • 14 slides


Advancing Sustainable Nuclear Energy in Central Europe with Fast Reactors

Explore the potential of G4 fast reactors for advancing sustainable nuclear energy in Central Europe. Learn how fast neutron spectrum reactors can help address uranium stock depletion, waste elimination, and fuel cycle closure. Discover the regional long-term solution proposed for V4 countries and t

0 views • 12 slides


Helium Expander Inlet Temperature Analysis

Analyzing a helium expander operating at 18 bar inlet pressure and 2.0 bar exit pressure with a 70% efficiency to determine the inlet temperature at which the exhaust transitions to a two-phase state. The process involves calculations based on enthalpy values and real temperature at the inlet. Exper

0 views • 18 slides


Comparison of Hanbury Brown Twiss Effect for Bosons and Fermions

This study compares the Hanbury Brown Twiss (HB&T) effect for bosons and fermions, showcasing how different correlation functions apply to these particles in quantum systems. The analysis delves into the mathematical structures and order correlations for both bosons and fermions, illustrating the ph

0 views • 13 slides


Insights into Quasiparticles in Normal and Superfluid Fermi Liquids

This content discusses quasiparticles in normal and superfluid Fermi liquids, covering topics such as the Landau Fermi-liquid idea, BCS theory, Bogoliubov-de Gennes approach, Majorana fermions, conservation quantities in liquids, consequences of conservation for response functions, and applications

0 views • 23 slides


Exploring the Fascinating World of Elements

Dive into the intriguing characteristics of different elements, from the peculiarities of Hydrogen to the inert nature of Helium, the reactivity of Lithium and Beryllium, the uniqueness of Boron, and the importance of Carbon in organic chemistry. Discover their properties, electron configurations, a

0 views • 62 slides


Unveiling the Progenitors of Stripped Envelope Supernovae (SNe)

The mechanism behind the stripping of stripped-envelope SNe remains a key question linked to their progenitors. Various mechanisms such as Single Star Progenitors, Binary Star Progenitors, Stellar Winds, and Close Binary Interactions are thought to dominate the stripping process. Observations of Typ

0 views • 12 slides


Enhancing Vacuum Performance with Activated Charcoal Fabric in Multi-Layer Insulation Systems

Multi-layer insulation (MLI) systems play a crucial role in cryogenic applications, affecting vacuum quality and efficiency. This study explores the use of activated charcoal fabric (ACF) as a potential replacement for traditional spacer materials in MLI, enhancing cryopumping performance. By incorp

0 views • 16 slides


Overview of Helium-Neon Laser Technology

Helium-neon lasers are widely used in various industries and scientific settings. They are classified based on active materials, wavelengths, and operational modes. The He-Ne laser, invented in 1961, operates at a red wavelength of 6328nm. Its construction involves a mixture of helium and neon gases

0 views • 12 slides


Cryogenic Heat Load Measurement and Calibration at IHEP

Researchers at IHEP in Beijing, China, conducted heat load measurements for a 1.3 GHz Cryomodule, analyzing uncertainties in flow rate readings and calibrating mass flow rates. The study involved static and dynamic heat load measurements, utilizing various control interfaces and valves. Calibrations

0 views • 9 slides


Impact of Return Pressure Variation on C100 Cryomodule Performance

The performance of SRF cavities, specifically the C100 Cryomodule (CM), is influenced by the local surface resistance, bulk Nb temperature, and pressure variations. This study evaluates how return pressure variation affects the heat transfer limitations within the C100 CM, impacting cavity performan

0 views • 13 slides


Advancements in Neutron Cooling Techniques and Paramagnetic Systems

The presentation discusses cascaded cooling of neutrons and Namiot's proposal for phononless cooling to low temperatures using polarized deuterons. It explores inelastic scattering cross-sections, candidate paramagnetic systems, and excitations in O2. Additionally, it covers rate constants, superflu

0 views • 11 slides