微觀描述熱核裂變壽命(英文)
發(fā)布時間:2018-09-18 11:02
【摘要】:有關(guān)熱核裂變的研究與反應(yīng)堆中的誘發(fā)裂變,天體環(huán)境中的裂變,以及超重元素的合成等密切相關(guān)。熱核裂變的研究通常是基于Bohr-Wheeler的統(tǒng)計(jì)裂變理論。而統(tǒng)計(jì)模型的研究十分依賴唯像的能級密度和位能面。因此,提出基于微觀的有限溫度的能量密度泛函理論計(jì)算熱核的裂變壽命?梢晕⒂^自洽地計(jì)算出溫度相關(guān)的裂變位壘高度,曲率,集體質(zhì)量參數(shù)。基于虛自由能法,從低溫到高溫的裂變壽命可以由一個統(tǒng)一的框架給出。展示了在裂變研究中溫度相關(guān)裂變位壘的重要性,并討論了微觀描述熱核裂變的前景。
[Abstract]:The study of thermonuclear fission is closely related to the fission induced in reactor, fission in celestial environment, and the synthesis of overweight elements. The study of thermonuclear fission is usually based on Bohr-Wheeler 's statistical fission theory. The study of the statistical model depends heavily on the phenomenological energy level density and potential energy surface. Therefore, an energy density functional theory based on microcosmic finite temperature is proposed to calculate the fission lifetime of the thermonuclear. The temperature dependent fission barrier height, curvature and collective mass parameters can be calculated microscopically and consistently. Based on the virtual free energy method, the fission life from low temperature to high temperature can be given by a unified framework. The importance of temperature-dependent fission barrier in fission research is demonstrated and the prospect of microcosmic description of thermonuclear fission is discussed.
【作者單位】: 北京大學(xué)物理學(xué)院核物理與核技術(shù)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】:National Natural Science Foundation of China(11375016,11522538) Doctoral Program of Higher Education of China(20130001110001)~~
【分類號】:O571.43
本文編號:2247706
[Abstract]:The study of thermonuclear fission is closely related to the fission induced in reactor, fission in celestial environment, and the synthesis of overweight elements. The study of thermonuclear fission is usually based on Bohr-Wheeler 's statistical fission theory. The study of the statistical model depends heavily on the phenomenological energy level density and potential energy surface. Therefore, an energy density functional theory based on microcosmic finite temperature is proposed to calculate the fission lifetime of the thermonuclear. The temperature dependent fission barrier height, curvature and collective mass parameters can be calculated microscopically and consistently. Based on the virtual free energy method, the fission life from low temperature to high temperature can be given by a unified framework. The importance of temperature-dependent fission barrier in fission research is demonstrated and the prospect of microcosmic description of thermonuclear fission is discussed.
【作者單位】: 北京大學(xué)物理學(xué)院核物理與核技術(shù)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】:National Natural Science Foundation of China(11375016,11522538) Doctoral Program of Higher Education of China(20130001110001)~~
【分類號】:O571.43
【相似文獻(xiàn)】
相關(guān)期刊論文 前5條
1 蘇為寧,趙經(jīng)武;誘發(fā)裂變中子場及其功率譜密度比值測量法[J];原子能科學(xué)技術(shù);1999年01期
2 姜猛;段占元;林源根;郭春營;吳昌莉;;鈾材料誘發(fā)裂變緩發(fā)γ能譜的數(shù)值計(jì)算[J];核電子學(xué)與探測技術(shù);2010年07期
3 喬亞華;吳繼宗;楊毅;劉世龍;;3MeV中子誘發(fā)裂變測定鈾同位素豐度[J];原子能科學(xué)技術(shù);2012年07期
4 錢興,,江棟興,葉沿林,許謹(jǐn)誠,劉祖華,張煥喬;壘下重離子誘發(fā)裂變的MonteCarlo模擬[J];計(jì)算物理;1994年03期
5 ;[J];;年期
相關(guān)會議論文 前1條
1 喬亞華;張敏;吳繼宗;楊毅;劉世龍;;快中子誘發(fā)裂變測定鈾同位素豐度[A];中國原子能科學(xué)研究院年報 2009[C];2010年
本文編號:2247706
本文鏈接:http://www.sikaile.net/kejilunwen/wulilw/2247706.html
最近更新
教材專著