PhD in theoretical nuclear physics

At the Univeristy of Surrey we have the largest theoretical nuclear physics group in the UK.  Size isn't everything of course, but it's a vibrant group that works alongside one of the largest experimental groups to make up a great place to do nuclear physics.  I must admit that I was not wholly cognisant of this fact before coming here, and as a finishing undergraduate at Oxford I first looked at local opportunities before thinking about looking further... and took one of those opportunities before looking further afield.  No harm probably came of that, though it was perhaps a little unambitious of me at the time.   Still, I can understand those students today who don't necessarily cast their net as widely as they could when looking for PhD places.  Theoretical Nuclear Physics is increasingly an area outside of the obvious target for graduating students to think about, since it has been quite squeezed out of the undergraduate syllabus, with many students getting little more than what appears in the IoP's Core of Physics, which is a recap and a slight extension of the A-level syllabus.   

It's too bad - there is a lot of activity in nuclear physics (pun intended).  We are not just filling in the gaps in an ageing field of physics.  2010 saw the most new isotopes discovered since nuclear physicists first started building accelerators to study matter - and we are about to enter a new golden period of new experimental facilities around the world, such that the 2010 figure will be overtaken again in the not too-distant future.  The theoretical understanding of nuclei, which are hugely complex objects, gets ever-better, with leaps in understanding of the underlying interaction between the constituents, and in the the ability to perform better calculations.  It's a good time to be in nuclear physics.

So... might I mention here that we have a PhD position available, with funding for a good UK candidate, to undertake research in the theoretical nuclear physics group at Surrey.  We work on a diverse range of topics across the group.  Feel free to get in touch, or leave a comment below if you're interested in finding out more!

Just Read it

Yesterday's email from the Journal of Physics G, which covers nuclear and particle physics, featured a list of newly published articles.   The first on the list turns out to be a review by my Surrey colleague Justin Read, and is a review of local measurements of the Dark Matter density.  I know rather little about the topic, and the review is surely my opportunity to remedy this.  I shall add it to my reading list, though I did also learn the word tsundoku yesterday, which may be the status of this review, like so many others.

The picture attached to the post is taken from the freely-downloadable version of his review that Justin has made available on his website.  You (and I) will  have to read the paper to understand the context of the figure, but I always try to illustrate each post with some graphic!

Ten days in Tennessee

1) Me in front of a large guitar

So, I'm about to head back from Tennessee after what feels like a lot more than 10 days.  Following my last post, I spent about a week in Nashville, visiting a collaborator (a word that was synonymous with quisling to me before I stared upon scientific collaborations, and still retains the ability to cause me to doubt its appropriateness) to make use of the fact that I was nearby for other reasons.

My host, Sait, and his wife Melinda looked after me brilliantly, taking me to many of Nashville's sites, including the Grand Old Opry (first picture) and to many of the famous music venues downtown.  

I was impressed to find my name, along with a promotion in title, on the door of an office when I got to Vanderbilt (second picture).  Of course, I shouldn't necessarily be impressed by a piece of paper tucked into the display holder on a door, but it was a nice touch!  

2) My name, with an elevated title

I worked on an old paper that I have let sit around for far too long, based on the work of one of my brilliant PhD students, who went off to greater things working on climate science.  This meant that it was for me to turn parts of her thesis into publications, if it was going to happen at all.  It hasn't yet, but I made much progress last week in following that up, though I spent more time re-acquainting myself with her code and the maths and physics behind it than I would have had to had I got on with it when she left. 

3) Stevenson Center

Not only was my name of the door to my office, but Vanderbilt University seem to have named the whole building complex in which much of the science faculty is based after me (photo #3).  A cursory exploration of Vanderbilt's Wikipedia page sheds no light on who the real Stevenson is, so if anyone knows, do comment below.

For various complicated reasons, my trip to Oak Ridge and that from Oak Ridge to Nashville took place on totally separate flight bookings, so my journey home is in two stages;  a two-flight trip from Nashville to Knoxville, a night in Knoxville, and a two-flight trip from Knoxville to London.  I'm at Knoxville airport waiting ready for the last stage to take place.

Look how masculine I am!

Normally when I come to the US, I book a hire care in the lowest price category, hoping to get something small and economical.  More often than not the people behind the car hire desks can't believe I really want such a small car and try to persuade me to upgrade.  This time, however, I didn't make the car booking myself, and this is what I got.  Look;  it's as big as a building, nearly.  

In contrast, here are some ducklings I saw at the lab today:

Back to the old house

After a week off of work, it's off to Tennessee for me.  Oak Ridge, where I'm heading first, is my old stomping ground - hence the title of this post and its musical accompaniment.  Unlike the song, I do like going back, though it does always evoke memories going back to somewhere I spent quite a few years living.  My trip to Oak Ridge will be pretty fleeting - for a couple of days to give an invited seminar to the Physics Division - but followed by my first ever visit to Nashville, to visit a friend and collaborator at Vanderbilt University.  For some strange reason, when living in Oak Ridge, I never did make it to Nashville, despite making road trips as far afield as New York City and New Orleans... Still, finally fixing that, 

No doubt I will have cause to include musical accompaniments to my blog posts when in Nashville that are a little different to The Smiths.

April 2014 Graduation

After the IoP conference drew to a close on Wednesday, I had a day off, then on Friday, there was our postgraduate graduation ceremony.  It happens once a year, and includes all those who have finished their taught postgraduate courses (MScs, mostly, amongst the Physics Department) or PhDs.  I almost always attend the undergraduate graduation ceremonies, featuring our undergraduate students, but usually reserve the postgraduate ceremonies for those when I know there will be students in it that I have taught.  My teaching is heavily focused on undergraduates rather the MSc students, so I tend to go just to those PG ceremonies that I have PhD students graduating at.  This one was the one where my (now ex-)student Chris would be due to attend, so I signed up.  I realised on the day that I didn’t actually know if Chris would choose to attend the ceremony, despite being eligible and having a post-doc job in the University.  It seemed likely, but you can never tell… Fortunately, as I was wandering to the place where the graduation robes are doled out, I bumped into Chris, who was heading there for the same thing.

Graduation ceremonies are nice because you see the person of interest to you graduating, and a little boring because you see a lot of people you don’t know doing the same thing.  Perhaps for the likes of me it is more interesting because I am bound to know a higher fraction of the graduands than a general member of the audience is.  In fact, even though I didn’t directly teach the Physics MSc cohort that was graduating, I did know a bunch of the from their undergraduate days, and they had re-enrolled for another degree.  

It was too bad that I couldn’t go to the post-ceremony genteel garden party afterwards, to chat to Chris and see his dad again, who I hadn’t seen since he came along on the day I interviewed Chris for his Phd about 4 years ago.  I had to meet with a current PhD student and then head off to give a talk about the use of nuclear physics in geology to the West Sussex Geological Society.  But that deserves a whole separate post of its own…

IoP conference day 2

The pre-dinner reception
was going on through this
window!

Day two of the IoP Nuclear Physics Conference is the only completely full day.  It was pretty full of shorter parallel talks by students and postdocs - which is really the heart of the the national conference, but I only made notes to blog from from the first, plenary, session of invited talks.  Here's a summary:

The morning session kicked off with Evgenny Epelbaum talking about Chiral approaches to nuclear forces.  This method builds up nuclear forces and allows nuclear structure calculations from basic QCD-inspired ideas.  Evgenny presented results including the famous Hoyle state in Carbon, reproducing the energy pretty well.

Next up, Gary Simpson from the University of the West of Scotland, looking at what happens to the structure of tin isotopes, as one looks at very heavy exotic isotopes beyond Sn-132.  Some theories suggest that N=90 might be a local magic number and lead to a surprisingly stable Sn-140 isotope, which may have a strong influence on explosive nuclear processes in stars.  With Sn-132 already being pretty exotic, it’s quite some thing to suggest that one could then look at a substantial extension to the tin isotopes, but thanks to the RIKEN facility, they’ve now made it out to Sn-142.  

Andrei Andreyev talked about a series of results of properties of nuclei in the vicinity of lead.  In their experiments, they produce their nuclei by firing protons at Uranium targets, and produce a whole slew of reaction and decay products.  Here, Andrei concentrated on spallation reactions, which give resulting nuclei a bit lighter than Uranium, and in particular produced may results of astatine isotopes.  Astatine is often quoted as the rarest isotope found on Earth, with only a fraction of a gram in the Earth’s crust at any one time.  Their work included the first determination of the chemical ionisation potential of astatine.  Go nuclear physics!

The final plenary talk of the morning was by Judith McGovern whose talk was on proton polarisabilities from Compton Scattering.  Scattering photons off of protons is not as simple as it might seem, thanks to the size and structure of the proton.  Thanks to the presence of charged objects inside protons (i.e. quarks), the electric field associated with photons can cause a separation and movement of charges inside the proton and cause knock on effects on the scattered photon, such as a polarisation of the light. Judith presented some of the important questions and attempts to find theoretical resolutions, including some of the intriguing recent results like the apparent measurement of a much smaller proton than previously thought. 

The next three session were all parallel, so clearly I only saw half the remaining talks.  I was pleased with how my student did, and it was encouraging that he got lots of interesting questions afterwards, which then prompted a discussion in the break afterwards, which gave us a list of calculations to make that can keep us occupied for a long time.

The evening featured the conference dinner, which is a nice highlight of all conferences.  It's not really a way of wasting research money on fine dining, but rather an important part of community cohesion for a group of people that spend most of the year not seeing each other, but having to work as a unified community at various points (e.g. when interacting with funding agencies).  The UK conference is good place for new students to get to

know each other and the community's old hands.   Over dinner, some of us old hands talked about famous events from old conferences, and hopefully some of the students here this week will be doing the same at an IoP Nuclear Conference in many years from now.

I've interspersed some pictures taken at the dinner through the post.