What does DH mean in UNCLASSIFIED
DH stands for Dynamic Hohlraum. In the context of inertial confinement fusion (ICF), it refers to a technique used to create a high-energy, uniform radiation field within a target chamber.
DH meaning in Unclassified in Miscellaneous
DH mostly used in an acronym Unclassified in Category Miscellaneous that means Dynamic Hohlraum
Shorthand: DH,
Full Form: Dynamic Hohlraum
For more information of "Dynamic Hohlraum", see the section below.
How it Works
The DH consists of a cylindrical or spherical cavity lined with a high-reflectivity material, such as gold or uranium. A powerful laser beam is focused onto the interior surface of the cavity, creating a plasma that fills the cavity and absorbs the laser energy. This plasma then emits X-rays as it cools, which are reflected off the cavity walls and converge at the center of the target chamber.
Advantages
The DH provides several advantages over other ICF target designs:
- High energy density: The plasma within the cavity can reach temperatures of several million degrees Celsius, creating a high-energy radiation field.
- Uniformity: The X-rays emitted from the plasma are highly uniform, ensuring a more consistent implosion of the fusion target.
- Symmetry: The cylindrical or spherical shape of the cavity promotes symmetry in the radiation field, leading to a more efficient fusion reaction.
Applications
The DH technique is primarily used in ICF experiments aimed at achieving nuclear fusion for energy production. It has also been employed in other applications, such as:
- X-ray generation for medical imaging
- Material property characterization
- Plasma physics research
Essential Questions and Answers on Dynamic Hohlraum in "MISCELLANEOUS»UNFILED"
What is Dynamic Hohlraum (DH)?
Dynamic hohlraum (DH) is a technique used in inertial confinement fusion (ICF) experiments to create a uniform, high-temperature radiation environment inside a hohlraum (a cavity) to drive the implosion of a fusion capsule.
How does DH work?
In DH, a high-power laser beam enters the hohlraum through an aperture and interacts with the inner surface of the hohlraum, creating a plasma. This plasma emits X-rays that fill the hohlraum and irradiate the fusion capsule, which is placed in the center of the hohlraum. The X-rays heat and compress the capsule, causing it to implode and release fusion energy.
Why is DH important in ICF experiments?
DH is important in ICF experiments because it allows for the creation of a uniform, high-temperature radiation environment inside the hohlraum. This is essential for driving the implosion of the fusion capsule and achieving fusion ignition.
What are the challenges in implementing DH?
The challenges in implementing DH include controlling the uniformity of the radiation environment inside the hohlraum, preventing the laser beam from damaging the hohlraum walls, and achieving the required laser power and energy.
What are the applications of DH?
DH is primarily used in ICF experiments, but it also has potential applications in other areas such as high-energy-density physics and materials research.
Final Words: DH is a critical technique in ICF research, enabling the creation of a high-energy, uniform radiation field for the implosion of fusion targets. Its advantages include high energy density, uniformity, and symmetry, making it a valuable tool for advancing fusion energy research and other applications.
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