相关实验视频
Updated: Jul 3, 2025

10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
6.7K
为放射性离子束开发一个气体喷气合电子循环电子共振离子源
Mahuwa Bhattacharjee1,2, Chinmay Giri1, Syed Masum1
1Variable Energy Cyclotron Centre, Kolkata, West Bengal, India.
The Review of scientific instruments
|February 11, 2024
概括
一个新的电子旋转子共振离子源与气体喷射脱脂器系统相结合,有效地产生放射性离子束 (RIB). 这种系统在碳-11同位素中实现了高达9 × 10^3粒子/秒的强度.
科学领域:
- 核物理 核物理 核物理
- 加速器科学加速器科学
- 原子和分子物理 原子和分子物理
背景情况:
- 放射性离子束 (RIB) 的在线生产对于各种科学应用至关重要.
- 电子旋转子共振 (ECR) 离子源被广泛用于产生离子束.
- 气体喷射脱脂器系统提供了有效的方法来运输和限制目标材料.
研究的目的:
- 开发和描述一个新的2.45GHzECR离子源,与气喷射脱脂器系统集成.
- 调查放射性离子束的在线生产,特别是碳-11同位素.
- 在光束强度和效率方面评估开发系统的性能.
主要方法:
- 开发一个2.45GHz的ECR离子源.
- 集成的气体喷射滑脂器系统,用于辐射气体注入.
- 在线生产和测量放射性离子束 (11C1+,11CO21+,11CO1+).
- 用1μA原质子束轰炸一个气目标.
主要成果:
- 在线成功生产了11C1+,11CO21+和11CO1+放射性离子束.
- 实现的光束强度高达每秒大约9 × 10^3个粒子.
- 证明了气体喷气合ECR离子源用于RIB生成的有效性.
- 报告了稳定同位素束和RIBs的结果.
结论:
- 开发的气喷气合ECR离子源是线上放射性离子束生产的可行系统.
- 该系统在产生特定的碳-11同位素方面表现出有希望的性能.
- 进一步的研究可以探索更高强度和更广泛的同位素范围的优化.
相关概念视频
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
618
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
618
Chemical Ionization (CI) Mass Spectrometry
749
The molecular ion peak of a molecule in the mass spectrum provides vital information for molecular identification. However, conventional electron impact ionization can lead to the rapid dissociation of some molecular ions before they reach the detector. A milder ionization method is required to increase the lifetime of such ionized analyte molecules. Chemical ionization (CI) is a gas-phase protonation reaction useful for mass-analyzing analyte molecules that are easily protonated to yield the...
749
Atomic Emission Spectroscopy: Instrumentation
425
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
425
Atomic Absorption Spectroscopy: Radiation and Light Sources
398
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
398
Atomic Emission Spectroscopy: Overview
2.2K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
2.2K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
221
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
221

