初来院里，一切很好，每个人的素质很高，单位给每个人也提供了很多的方便，宿舍条件也很好。而接下来的一周的培训，两周的考核却不是那么人性化。死死的框框条条在那，把每个实验做得细微到了极致。或许是本人性格使然，一直对自己要求还够严格，所以不是特别害怕这样的方式。当然心里一面为这样的“过则留，不过则走”的标准有点非议，一面为这样的制度的实施感到开心，单位的产业化发展需要这些。考核是很严格的，而且结果是仪器说了算，没有了人性化的机动可言。昨日，有一研究生和博士在第一项金枪考核上挂了，虽说挂是很平常的事情，每天这样的事情多得没法计算。但是他们的感触却说出了一部分人的心声：做实验做了几年，来了这发现自己连基本的实验都达不到标准，还有什么意思再做实验了。这其中的感触我不想细评，而却给自己无形增加了压力。

今日上午，我是最后一个考核的，紧张是有史以来第一次如此，发挥很差，但是还是鬼使神差的过了。似乎今天的通过率不到20%。在庆幸的同时，却一点也不轻松。自己需要努力的地方还很多，平时没有人要求我们怎么严格要求自己，导师也不会把细节看得很重，结果才是最重要的。所以很多的时候，人总是放纵自己，等习惯了，想收也是很难的。我虽过了，但是很多的细节被扣分了，以前因为环境中的人都不注重这些，慢慢的觉得细节也不是很重要，忽略了，到如今感触到，正确的总是正确的，不会因为没有人看到而不正确，错误的总会是在错误的，充数是因为时候未到，一旦发现，后悔莫及。

通过这样的考核，我的心很沉重，原来自己在成长的过程中，有很多的原则的东西，正确的东西都在因为环境的影响而从自己身上慢慢挤掉了，或许这个世界的反面诱惑真的太大了。

◆ This Journal Citation Reports focuses mainly on the field of nuclear physics and relevant subjects collected from JCR Science Edition 2009 in comparison with 2008 and 2007.

————————————————————————————————————————————————
IF2009　2008　2007 | Journal Title | Journal Country
————————————————————————————————————————————————
[MULTIDISCIPLINARY SCIENCES]
↑ 34.480 31.434 28.751 | Nature | ENGLAND
↑ 29.747 28.103 26.372 | Science | UNITED STATES
————————————————————————————————————————————————
[PHYSICS, MULTIDISCIPLINARY]
- 33.145 33.985 38.403 | Reviews of Modern Physics | UNITED STATES
- 17.752 18.522 20.263 | Physics Reports | NETHERLANDS
↓ 15.491 16.821 14.677 | Nature Physics | ENGLAND
- 11.444 12.090 11.366 | Reports on Progress in Physics | ENGLAND
-　7.328　7.180　6.944 | Physical Review Letters | UNITED STATES
↑　5.083　4.034　4.189 | Physics Letters B | NETHERLANDS
↑　4.437　3.674　5.133 | Physics Today | UNITED STATES
-　3.312　3.440　3.264 | New Journal of Physics | ENGLAND
↑　2.893　2.203　2.206 | Europhysics Letters | FRANCE
↓　2.677　3.171　3.253 | Annals of Physics | UNITED STATES
↑　2.572　2.058　2.212 | Journal of the Physical Society of Japan | JAPAN
↑　2.368　1.661　1.936 | Progress of Theoretical Physics | JAPAN
-　1.662　1.418　1.378 | JETP Letters | RUSSIA
↓　1.293　1.680　2.103 | Chinese Physics B | CHINA
-　1.040　0.973　0.591 | Science in China Series G | CHINA
-　1.003　1.165　1.277 | Acta Physica Sinica | CHINA
↑　0.972　0.743　0.812 | Chinese Physics Letters | CHINA
↓　0.579　0.719　0.676 | Communications in Theoretical Physics | CHINA
-　0.547　0.480　0.606 | Progress of Theoretical Physics Supplement | JAPAN
————————————————————————————————————————————————
[PHYSICS, NUCLEAR]
↑ 11.964　9.893 12.885 | Annual Review of Nuclear and Particle Science | UNITED STATES
↑　4.270　2.730　3.278 | Nuclear Fusion | AUSTRIA
↓　3.556　3.860　4.101 | Progress in Particle and Nuclear Physics | ENGLAND
↑　3.477　3.124　3.302 | Physical Review C | UNITED STATES
-　2.409　2.299　3.070 | Plasma Physics and Controlled Fusion | ENGLAND
↓　2.124　5.270　3.485 | Journal of Physics G | ENGLAND
-　1.968　2.015　1.801 | European Physical Journal A | GERMANY
-　1.706　1.959　3.096 | Nuclear Physics A | NETHERLANDS
-　1.413　1.463　3.207 | Atomic Data and Nuclear Data Tables | UNITED STATES
↓　1.145　3.404　1.362 | Nuclear Data Sheets | UNITED STATES
↓　1.075　1.334　1.455 | Modern Physics Letters A | SINGAPORE
-　0.941　0.982　0.764 | International Journal of Modern Physics A | SINGAPORE
-　0.643　0.492　0.684 | International Journal of Modern Physics E | SINGAPORE
-　0.539　0.491　0.515 | Physics of Atomic Nuclei | RUSSIA
-　0.251　0.260　0.171 | Chinese Physics C | CHINA
————————————————————————————————————————————————
[ASTRONOMY & ASTROPHYSICS]
- 25.640 25.826 20.290 | Annual Review of Astronomy and Astrophysics | UNITED STATES
↓ 12.771 13.990　7.898 | Astrophysical Journal Supplement Series | UNITED STATES
↑ 11.857　7.500　6.000 | Astronomy and Astrophysics Review | GERMANY
↑　7.364　6.331　6.405 | Astrophysical Journal | UNITED STATES
-　6.502　6.389　6.067 | Journal of Cosmology and Astroparticle Physics | ENGLAND
-　5.103　5.185　5.249 | Monthly Notices of the Royal Astronomical Society | ENGLAND
↑　5.022　4.429　2.525 | Publications of the Astronomical Society of Japan | JAPAN
-　4.481　4.769　5.019 | Astronomical Journal | UNITED STATES
-　4.179　4.153　4.259 | Astronomy & Astrophysics | FRANCE
↑　4.136　3.388　3.483 | Astroparticle Physics | NETHERLANDS
↓　1.046　1.968　1.870 | International Journal of Modern Physics D | SINGAPORE
↑　0.888　0.689　0.652 | Chinese Journal of Astronomy and Astrophysics | CHINA
————————————————————————————————————————————————
[PHYSICS, PARTICLES & FIELDS]
- 10.600　———　——— | Living Reviews in Relativity | UNITED STATES
↑　6.019　5.375　5.659 | Journal of High Energy Physics | ITALY
-　4.922　5.050　4.696 | Physical Review D | UNITED STATES
-　4.341　4.158　4.645 | Nuclear Physics B | NETHERLANDS
-　3.029　3.035　2.846 | Classical and Quantum Gravity | ENGLAND
↑　2.616　1.803　1.455 | General Relativity and Gravitation | UNITED STATES
————————————————————————————————————————————————
[PHYSICS, MATHEMATICAL]
-　2.369　2.279　2.372 | Journal of Computational Physics | UNITED STATES
↓　2.077　2.330　1.633 | Communications in Computational Physics | CHINA
-　2.067　2.075　2.070 | Communications in Mathematical Physics | GERMANY
-　2.034　2.075　2.980 | Advances in Theoretical and Mathematical Physics | UNITED STATES
-　1.958　2.120　1.842 | Computer Physics Communications | NETHERLANDS
————————————————————————————————————————————————
[PHYSICS, OTHER]
-　2.866　2.908　2.893 | Physical Review A | UNITED STATES
-　3.475　3.322　3.172 | Physical Review B | UNITED STATES
-　2.400　2.508　2.483 | Physical Review E | UNITED STATES
————————————————————————————————————————————————
Read more…

一个月一个月在不断的逝去，换来的是一次次和你的分别和相聚，但这成为习惯的时候，我开始学会了珍惜和你在一起的分分秒秒。亦或是一次牵手，一次对视，我都觉得很欣慰。



我相信长久的爱情是要经过生活的磨练才能更加牢固，幸福的生活是要经过等待和拼搏才能更加美妙。"执子之手，与子偕老"。

昨日，实验室一伙爱吃的聚到了郝师姐家，各显身手，弄了最为丰盛的一顿中餐兼晚餐。呵呵，我们算是创纪录了，从上午11点到晚上九点，大家一直在吃，一直在做，一共做了多少菜，谁也记不住了，我的相机只记录了少量的菜。我本来还是做我的鱼和红烧猪蹄，实在是才人太多，主动让位，只做了没人做的小炒鸡块！味道还不错，比妈妈的差很多，比保元的大盘鸡差点，但是还是受欢迎的，连辣椒都被吃了。没有想到，在快要走时，还能和同学们这么欢聚一次。快乐不知如何表达。

Title: Relativistic description of BCS–BEC crossover in nuclear matter

Author(s): Bao Yuan Sun, Hiroshi Toki, and Jie Meng

Source: Physics Letters B
Volume: 683  Issue: 2-3  Page: 134-139 Published: 18 January 2010

Keyword(s): Pairing correlation; Nuclear matter; Relativistic pairing theory; Bare nucleon–nucleon interaction; Di-neutron spatial correlation; BCS–BEC crossover
KeyWords Plus: MEAN-FIELD THEORY; NEUTRON DRIP-LINE; STATE PROPERTIES; HALO; LI-11; SUPERCONDUCTIVITY; SUPERFLUIDITY; HE-6; PAIR

History: Received 15 April 2009; revised 30 September 2009; accepted 11 November 2009; Available online 9 December 2009

DOI: 10.1016/j.physletb.2009.11.065

Abstract: We study theoretically the di-neutron spatial correlations and the crossover from superfluidity of neutron Cooper pairs in the ¹S₀ pairing channel to Bose-Einstein condensation (BEC) of di-neutron pairs for both symmetric and neutron matter in the microscopic relativistic pairing theory. We take the bare nucleon-nucleon interaction Bonn-B in the particle-particle channel and the effective interaction PK1 of the relativistic mean-field approach in the particle-hole channel. It is found that the spatial structure of neutron Cooper pair wave function evolves continuously from BCS-type to BEC-type as density decreases. We see a strong concentration of the probability density revealed for the neutron pairs in the fairly small relative distance around 1.5 fm and the neutron Fermi momentum k_Fn is an element of [0.6, 1.0] fm^-1. However, from the effective chemical potential and the quasiparticle excitation spectrum, there is no evidence for the appearance of a true BEC state of neutron pairs at any density. The most BEC-like state may appear at k_Fn - 0.2 fm^-1 by examining the density correlation function. From the coherence length and the probability distribution of neutron Cooper pairs as well as the ratio between the neutron pairing gap and the kinetic energy at the Fermi surface, some features of the BCS-BEC crossover are seen in the density regions, 0.05 fm^-1 < k_Fn < 0.7 (0.75) fm^-1, for the symmetric nuclear (pure neutron) matter.

Figure: A two-dimensional plot for the probability density r²|Ψ_pair(r)|² of the neutron Cooper pairs as a function of the neutron Fermi momentum k_Fn and the relative distance r between the pair partners in symmetric nuclear matter.

>> View Full Text <<

Title: Deformation Effect on the Center-of-Mass Correction Energy in Nuclei Ranging from Oxygen to Calcium

Author(s): ZHAO Peng-Wei (赵鹏巍), SUN Bao-Yuan (孙保元), and MENG Jie (孟杰)

Source: Chinese Physics Letters
Volume: 26  Issue: 11  Page: 112102 Published: November 2009

KeyWords Plus: GROUND-STATE PROPERTIES; MEAN-FIELD-THEORY; FINITE NUCLEI

History: Received 15 June 2009

DOI: 10.1088/0256-307X/26/11/112102

Abstract: The microscopic c. m. correction energies for nuclei ranging from oxygen to calcium are systematically calculated by both spherical and axially deformed relativistic mean-field (RMF) models with the effective interaction PK1. The microscopic c. m. correction energies strongly depend on the isospin as well as deformation and deviate from the phenomenological ones. The deformation effect is discussed in detail by comparing the deformed with the spherical RMF calculation. It is found that the direct and exchange terms of the c. m. correction energies are strongly correlated with the density distribution of nuclei and are suppressed in the deformed case.

Figure: Microscopic c.m. correction energies (solid lines) of nuclei ranging from Oxygen to Calcium in the spherical (a) and axially deformed (b) RMF calculations with the effective interaction PK1, in comparison with two phenomenological results (dashed lines). The solid lines from the left to the right respectively correspond to the isotopic chains from oxygen to calcium.

>> View Full Text <<