Travel grant to support experiment at MSU on r-process nuclei
支持密歇根州立大学 r 过程核实验的旅费补助
基本信息
- 批准号:ST/I003746/1
- 负责人:
- 金额:$ 0.76万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2010
- 资助国家:英国
- 起止时间:2010 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In supernova explosions, massive stars end their life in a rapid collapse followed by an explosion that ejects a large fraction of the stellar material into space. This kind of explosion is one of the prime candidates for the so-called r-process in which many of the heaviest chemical elements on Earth are produced. In the stellar collapse that drives the explosion, the electrons which hold back the collapse are rapidly absorbed by the atomic nuclei present in the star. As electrons are absorbed, the star is no longer stable and the collapse of the star inevitable. Because of the violence of the collapse, the outer layers of the star are subsequently flung into space in a supernova explosion. The protons from hydrogen have long been thought to dominate the absorption of electrons, whereas nuclei produced in the r-process have been excluded. This is because the internal structure of r-process nuclei has been thought to completely block the absorption of electrons. This blocking, however, is now being questioned. It has recently been shown that structural effects in the neutron-rich r-process nuclei can potentially open up for absorption of electrons on these nuclei, even to the degree where they become the dominant contributor to the collapse. To clarify this, the configuration of individual nucleons (that is, protons and neutrons) in r-process nuclei will be examined in the experiment. This investigation will utilise reactions where individual nucleons are knocked out of the short-lived r-process nuclei. In the experiment, both the knockout process as well as the nuclear states produced in the reactions will subsequently be investigated.
在超新星爆炸中,大质量恒星在快速坍缩中结束了它们的生命,然后爆炸将大部分恒星物质蒸发到太空中。这种爆炸是所谓的r过程的主要候选者之一,在这个过程中,地球上许多最重的化学元素都产生了。在驱动爆炸的恒星坍缩过程中,阻止坍缩的电子被星星中的原子核迅速吸收。随着电子被吸收,星星不再稳定,星星的坍缩不可避免。由于坍缩的剧烈程度,星星的外层随后在超新星爆炸中被抛入太空。长期以来,人们一直认为氢的质子在吸收电子中占主导地位,而在r过程中产生的原子核则被排除在外。这是因为r过程核的内部结构被认为完全阻挡了电子的吸收。然而,这种封锁现在受到质疑。最近的研究表明,富中子r过程核的结构效应可能会为这些核上的电子吸收打开大门,甚至到了它们成为塌缩的主要贡献者的程度。为了澄清这一点,在实验中将检查r过程核中单个核子(即质子和中子)的构型。这项研究将利用单个核子从短寿命r过程核中被敲出的反应。在实验中,随后将研究敲除过程以及反应中产生的核状态。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Electron capture in core-collapse supernovae investigated through configuration mixing in neutron-rich nuclei
通过富中子核中的构型混合研究核心塌陷超新星中的电子捕获
- DOI:10.1088/1742-6596/381/1/012119
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:Diget C
- 通讯作者:Diget C
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Brian Fulton其他文献
USING CARDIAC MAGNETIC RESONANCE IMAGING AND TRANSTHORACIC ECHOCARDIOGRAPHY TO PREDICT PRESENCE OF PAPILLARY MUSCLE-BASED VENTRICULAR ECTOPY IN MITRAL VALVE PROLAPSE
- DOI:
10.1016/s0735-1097(17)33758-0 - 发表时间:
2017-03-21 - 期刊:
- 影响因子:
- 作者:
Brian Fulton;Jackson Liang;Yuchi Han - 通讯作者:
Yuchi Han
Advanced Treatment of Hemodynamically Unstable Acute Pulmonary Embolism and Clinical Follow-up
血流动力学不稳定的急性肺栓塞的晚期治疗及临床随访
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:5.7
- 作者:
Brian Fulton;R. Bashir;Mitchell D. Weinberg;V. Lakhter;Parth M Rali;Steven Pugliese;Jay Giri;Taisei J. Kobayashi - 通讯作者:
Taisei J. Kobayashi
Brian Fulton的其他文献
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{{ truncateString('Brian Fulton', 18)}}的其他基金
EPSRC Core Capital University of York
EPSRC 核心 约克首都大学
- 批准号:
EP/V034030/1 - 财政年份:2020
- 资助金额:
$ 0.76万 - 项目类别:
Research Grant
EPSRC Capital Award for Core Equipment
EPSRC核心设备资本奖
- 批准号:
EP/T023570/1 - 财政年份:2019
- 资助金额:
$ 0.76万 - 项目类别:
Research Grant
University of York - Equipment Account
约克大学 - 设备账户
- 批准号:
EP/M507271/1 - 财政年份:2014
- 资助金额:
$ 0.76万 - 项目类别:
Research Grant
Travel grant to support measurement of the astrophysical 4He(3He,g)7Be rate at TRIUMF
旅费补助金用于支持 TRUMF 天体物理 4He(3He,g)7Be 速率的测量
- 批准号:
ST/I000798/1 - 财政年份:2010
- 资助金额:
$ 0.76万 - 项目类别:
Research Grant
Travel grant to support measurement of the astrophysical 4He(3He,g)7Be rate
支持天体物理 4He(3He,g)7Be 速率测量的旅费补助
- 批准号:
ST/G006539/1 - 财政年份:2008
- 资助金额:
$ 0.76万 - 项目类别:
Research Grant
Nuclear structure and nuclear astrophysics at the ISAC-II facility
ISAC-II 设施的核结构和核天体物理学
- 批准号:
EP/D060575/1 - 财政年份:2006
- 资助金额:
$ 0.76万 - 项目类别:
Research Grant
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