Recent content by toex

1. Yes, the peak was fully contained in 4-6 MeV. 2. Yes, the count was just the peak. 3. Thanks for your reply :) Sorry, I mixed them up. I was not using NaI(Tl), I was using a charged silicon detector to measure Po-210 inside a vacuum chamber. Thank you for replying! Another question, this...

Hi everyone, I am doing an experiment about alpha spectrum. I am using Model P-2000/1 (don't know if this matters), a NaI(Tl) scintillation probe. I selected energy range 3-8 MeV at the front panel and waited for 3000 counts at the peak, it took ~800 seconds. But when I selected energy range 4-6...

I have another question. What school in Hong Kong have big name? Are they as big as qinghua and beida? It does. My school is quite different, we follow GPA 4.0, and it will be printed on every student's transcript. Of course I'm not the first person to apply for grad school in the...

My GPA in my school is 3.0ish, and the 3.87 in the US doesn't count towards my current GPA. So my GPA is really low... you mean this one? Q: My undergraduate university has a reputation for grading harshly. Do you use different grade conversion tables for different universities? A...

I post this thread because I have a friend works in a physics department office in a univ in the US, and she said low GPA applications will be screened out in the very first stage. And from the sticky note, some students (with low GPA, 2.5ish-3.3ish) had been rejected by many grad schools very...

Do grad selections committees know... I am a Chinese student, going to apply for grad school in the US. I went on for exchange in a school that has quite good reputation in physics research, probably top 20 in the US. My experience: it is much harder for a student to get an A here than in...

oh! thank a lot!

can anyone explain what is d band and g band in the Raman spectrum of graphene?

what is Brillouin zone and K point?