搜索结果: 1-15 共查到“Compton”相关记录47条 . 查询时间(0.203 秒)
Virtual Compton Scattering and Generalized Polarizabilities of the Nucleon in Heavy Baryon Chiral Perturbation Theory
Virtual Compton scattering amplitude of nuclear chiral perturbation theory the tree level amplitude
2014/12/23
The spin-independent part of the virtual Compton scattering (VCS) amplitude from the nucleon is calculated within the framework of heavy baryon chiral perturbation theory (HBChPT). The calculation is ...
Virtual Compton scattering off the nucleon in chiral perturbation theory
The Compton scattering amplitude chiral perturbation theory gw amplitude
2014/12/22
We investigate the spin-independent part of the virtual Compton scattering (VCS) amplitude off the nucleon within the framework of chiral perturbation theory. We perform a consistent calculation to th...
Low energy Compton scattering and nucleon structure
Virtual Compton scattering low energy high resolution generalized measuring polarization baryon chiral perturbation theory
2014/12/22
The low energy virtual Compton scattering process eN\rightarrow e'N\gamma offers a new and potentially high resolution window on nucleon structure via measurement of so-called generalized polarizabili...
Compton scattering and the spin structure of the nucleon at low energies
Compton scattering nuclear scattering the photon energy electron volts baryon chiral perturbation theory
2014/12/22
We analyze polarized Compton scattering which provides information on the spin-structure of the nucleon. For scattering processes with photon energies up to 100 MeV the spin-structure dependence can b...
Measuring Proton Spin Polarizabilities with Polarized Compton Scattering
Compton Polarizabilities
2014/11/20
Polarized nuclear Compton scattering on a proton target provides a test of low energy QCD. The beam-target asymmetries of a circularly polarized Bremsstrahlung photon beam on a transversely polarized ...
2013年8月22日，应智能所仿生材料中心主任黄行九研究员的邀请，英国牛津大学Richard Guy Compton教授对智能所进行了访问，并作了题为“纳米颗粒电化学”的学术报告。纳米颗粒产品的广泛应用使得大量的纳米颗粒被释放到自然水体中，对人类健康和环境造成潜在的危害。因而，发展简单和高效的检测水中纳米颗粒的技术至关重要。Compton教授基于基础电化学理论，创新性的提出应用阳极颗粒库仑法（an...
Compton散射对1维3元未磁化等离子体光子晶体禁带影响
非线性光学 禁带 传输矩阵法 等离子体光子晶体
2013/8/31
为了研究Compton散射对1维3元未磁化等离子体光子晶体中TE波禁带影响,采用Compton散射模型和传输矩阵法,进行了理论分析和实验验证,取得了一些重要数据。结果表明,随着等离子体频率增大,左旋和右旋极化波禁带展宽比散射前减小0.09GHz,禁带主频率向高频区域移动增大0.48GHz。随着等离子体碰撞频率增大,两种极化波禁带宽度发生一定变化。随着等离子体回旋频率、填充率、光入射角和介质相对介电...
The beaming of external Compton emission
galaxies active radiation mechanisms nonthermal gamma rays theory
2011/10/21
We consider a relativistically moving blob consisting of an isotropic electron distribution that Compton-scatters photons from an external isotropic radiation field. We compute the resulting beaming p...
On the Lx-L6micron ratio as a diagnostic for Compton-thick AGN
X-rays: general X-rays: di use background X-rays: galaxies Infrared: galaxies
2011/10/11
As the mid-IR luminosity represents a good isotropic proxy of the AGN power, a low X-ray to mid-IR luminosity ratio is often claimed to be a reliable indicator for selecting Compton-thick (CT) AGN. We...
General-relativistic model of hot accretion flows with global Compton cooling
accretion, accretion discs – black hole physics – X-rays: binaries – X-rays:general
2011/9/28
We present a model of optically thin, two-temperature, accretion flows using an exact Monte Carlo treatment of global Comptonization, with seed photons from synchrotron and bremsstrahlung emission, as...
The inverse-Compton ghost HDF 130 and the giant radio galaxy 6C 0905+3955: matching an analytic model for double radio source evolution
galaxies: individual: RGJ123617/HDF130, 6C0905+3955 – galaxies: evolution – galaxies: jets – radio continuum: galaxies – X-rays: galaxies.
2011/9/28
We present new GMRT observations of HDF 130, an inverse-Compton (IC) ghost of a giant radio source that is no longer being powered by jets. We compare the properties of HDF 130 with the new and import...
Preliminary Results from Integrating Compton Photon Polarimetry in Hall A of Jefferson Lab
Integrating Compton Photon Polarimetry Hall A of Jefferson Lab
2011/9/6
A wide range of nucleon and nuclear structure experiments in Je erson Lab's Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, electr...
Preliminary Results from Integrating Compton Photon Polarimetry in Hall A of Jefferson Lab
Preliminary Results Compton Photon Polarimetry Jefferson Lab
2011/7/21
A wide range of nucleon and nuclear structure experiments in Jefferson Lab's Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, elect...
Monte Carlo study of a 3D Compton imaging device with GEANT4
Gamma-ray imaging, Compton imaging, Germanium strip detector, Nondestructive testing
2011/9/1
In this paper we investigate, with a detailed Monte-Carlo simulation based on Geant4, the novel approach to 3D imaging with photon scattering. A monochromatic and well collimated gamma beam is used to...
Real and Virtual Compton Scattering: the nucleon polarisabilities
Real Virtual Compton Scattering nucleon polarisabilities
2011/7/20
We give an overview of low-energy Compton scattering (gamma^(*) p --> gamma p) with a real or virtual incoming photon. These processes allow the investigation of one of the fundamental properties of t...