Category Archives: TAS

Public Lecture – 20 September 2017

2017 Alexander and Leicester McAulay Winter Lecture Series

Australian Institute of Physics – Tasmanian Branch

Giant Icebergs and the Future of the Antarctic Ice Sheet

Wednesday 20 September 2017, 8.00-9.00 pm
Physics Lecture Theatre 1
University of Tasmania, Sandy Bay Campus, Hobart

 

Dr Sue Cook
Antarctic Climate and Ecosystems Cooperative Research Centre

Events such as the 1 trillion-tonne iceberg which recently broke away from the Larsen C Ice Shelf capture headlines around the world. But what can these icebergs really tell us about the future of the Antarctic Ice Sheet? This lecture examines what we know about how icebergs form, how they are affected by climate change, and the implications for Antarctica’s future contributions to sea level rise.

Further details: Andrew Klekociuk (T 0418 323 341, E aip_branchsecretary_tas@aip.org.au)

http://www.events.utas.edu.au/2017/september/giant-icebergs-and-the-future-of-the-antarctic-ice-sheet

PUBLIC LECTURE – 22 AUGUST 2017

2017 Alexander and Leicester McAulay Winter Lecture Series

Australian Institute of Physics – Tasmanian Branch

Measuring Radiation Doses in 3-D with Polymer Gel Dosimeters

Tuesday 22 August 2017, 8.00-9.00 pm
Physics lecture Theatre 1
University of Tasmania, Sandy Bay Campus, Hobart

 

Professor Clive Baldock
University of Tasmania

Polymer gel dosimeters are fabricated from radiation sensitive chemicals which, upon irradiation, polymerize as a function of the absorbed radiation dose. These gel dosimeters, with the capacity to uniquely record clinical radiotherapy (radiation therapy) radiation dose distributions in three-dimensions (3D), have specific advantages when compared to one-dimensional dosimeters, such as ion chambers, and two-dimensional dosimeters, such as film. These advantages are particularly significant in dosimetry situations where steep dose gradients exist such as in intensity modulated radiation therapy (IMRT) and stereotactic radiosurgery. Polymer gel dosimeters also have specific advantages for brachytherapy dosimetry. Potential dosimetry applications include those for low-energy x-rays, high linear energy transfer (LET) and proton therapy, radionuclide and boron capture neutron therapy dosimetries. These 3D dosimeters are radiologically soft-tissue equivalent with properties that may be modified depending on the application. The 3D radiation dose distribution in polymer gel dosimeters may be imaged using magnetic resonance imaging (MRI), optical-computerized tomography (optical-CT), x-ray CT or ultrasound. The fundamental science underpinning polymer gel dosimetry will be reviewed along with the various evaluation techniques. Clinical dosimetry applications of polymer gel dosimetry will be presented.

Dr Katie Mack – Women in Physics Lecture Tour 2017 – TAS & SA 7 -11 August

Dr Katie Mack is the Women in Physics Lecturer for 2017.

See if she is coming to a location near you!

 

7th August – Devonport and Launceston, Tasmania

Event: School Lecture

Topic: Dispatches from a Dark Universe

Where: Don College

When: 8.45am

 

Event: School Lecture

Topic: Everything you wanted to know about Dark Matter but were afraid to ask

Where: Launceston College

When: 1.00pm

 

8th August – Hobart, Tasmania

Event: School Lecture

Topic: A Tour of the Universe (and Selected Cosmic Mysteries)

Where: Elizabeth College

When: 9.00am – 10.00am

 

Event: School Lecture

Topic: A Tour of the Universe (and Selected Cosmic Mysteries)

Where: The Friend’s School – The Farrall Centre

When: 12.00pm – 12.45pm

 

Event: Public Lecture

Topic: A Tour of the Universe (and Selected Cosmic Mysteries)

Where: Physics Lecture Theatre 1, Sandy Bay Campus, University of Tasmania

When: 8.00pm

 

9th August – Hobart, Tasmania

Event: School Lecture

Topic: TBA

Where: Taroona State High School

When: 9.40am

 

Event: School Lecture

Topic: TBA

Where: Ogilvie High School

When: 11.40am

 

10th August – Adelaide, South Australia

Event: School Lecture

Topic: A Tour of the Universe (and Selected Cosmic Mysteries)

Where: Eastern Fleurieu School

When: 10.00am

 

Event: Afternoon Tea

Topic: STEM women

Where: Physical and Chemical Sciences Tea Room, Flinders University

When: 2.00pm-3.00pm

 

Event: Public Lecture

Topic: A Tour of the Universe (and Selected Cosmic Mysteries)

Where: University of Adelaide, Napier G04

When: 7.30pm

 

11th August – Adelaide, South Australia

Event: Department Colloquium

Topic: Everything you wanted to know about Dark Matter but were afraid to ask.

Where: Physics Building Room 121, University of Adelaide

When: 12.00pm-1.00pm

 

 

 

PUBLIC LECTURE – 8 AUGUST 2017

2017 Alexander and Leicester McAulay Winter Lecture Series

2017 AIP Women in Physics Lecture

2017 National Science Week

Australian Institute of Physics – Tasmanian Branch

A Tour of the Universe (and Selected Cosmic Mysteries)

Tuesday 8 August 2017, 8.00-9.00 pm
Physics lecture Theatre 1
University of Tasmania, Sandy Bay Campus, Hobart

 

Dr Katie Mack
University of Melbourne

Everything humanity has ever seen or experienced represents a tiny speck in a vast and mysterious Universe. What else is out there, and how are we figuring it out? What puzzles wait to be solved? Come with your questions about dark matter, dark energy, black holes, or the ultimate fate of the Universe as we delve into some of cosmology’s most fundamental questions.

Further details: Simon Ellingsen (T 03 6226 7588, E aip_branchsecretary_tas@aip.org.au)

http://www.events.utas.edu.au/2017/august/a-tour-of-the-universe-and-selected-cosmic-mysteries

 

PUBLIC LECTURE – 27 JULY 2017

2017 Alexander and Leicester McAulay Winter Lecture Series

Australian Institute of Physics – Tasmanian Branch

The Physics of ITER and Fusion Power

Thursday 27 July 2017, 8.00-9.00 pm
Physics lecture Theatre 1
University of Tasmania, Sandy Bay Campus, Hobart

 

Associate Professor Matthew Hole
Australian National University

Assuming energy security and stability will always demand some base-load power stations on the grid our children and grandchildren will use, what will provide the heat to boil the water? The most attractive and yet elusive alternative to the chemical burning of carbonaceous fossil fuels and the nuclear fission of the rare heavy nuclei left over from supernovae has long been the nuclear fusion of the light nuclei left over from the big bang, still by far the most common form of ordinary matter.

Spawned by Reagan and Gorbachev as a grand international collaboration to thaw the cold war, the International Thermonuclear Experimental Reactor (ITER), which is now under construction, is the final step towards a demonstration power plant.

ITER heralds a new era in fusion research. Over 70MW of auxiliary heating will be used to initiate fusion events producing 500MW of fusion power. Temperatures will range from near absolute zero in the superconducting cryostat to 10 times hotter than the core of the Sun. The plasma volume approaches that of an Olympic swimming pool, and it will carry 15 MA of current, more than the current in 500 lightning bolts. The machine itself will weigh 23,000 tons, or about half the weight of the Sydney Harbour Bridge.

ITER’s research goal is to explore the uncharted physics of burning plasmas, in which the energy liberated from the confined products of reaction exceeds the energy invested in heating the plasma. To access these conditions, ITER will rely critically on external heating methods such as neutral beam injection. ITER will also feature fully 3D asymmetric field structure, imposed to mitigate performance limiting edge localised modes.

In this talk I will outline fusion-relevant research across Australia, and highlight ANU-led extensions to ideal magnetohydrodynamics (MHD). Ideal MHD, which is an enabling science of astrophysical plasmas, forms most of the physics basis for ITER.

Further details: Andrew Klekociuk (M 0418 323 341, E aip_branchsecretary_tas@aip.org.au)

http://www.events.utas.edu.au/2017/july/the-physics-of-iter-and-fusion-power

Public Lectures – 17 & 18 May 2017

2017 Alexander and Leicester McAulay Winter Lecture Series

Australian Institute of Physics – Tasmanian Branch

Physics, Power and Climate Change

Wednesday 17th of May 2017, 8.00-9.00 pm
Physics lecture Theatre 1
University of Tasmania, Sandy Bay Campus, Hobart
Thursday 18th of May 2017, 1.25-2.25 pm
F Block Theatre
Launceston College, 107-119 Patterson St, Launceston

 

Professor David Jamieson
University of Melbourne

Although the human responses to climate change are volatile, the laws of Physics are not. Since the 1905 Chemistry Nobel laureate Svante Arrhenius first modelled the greenhouse effect on the temperature of our planet little has changed from his prediction of a 2.1 degree Celsius temperature rise for a doubling of the 1905 carbon dioxide levels in the atmosphere.  Today, with greatly improved physical models, the prediction is between 2 and 4.5 degrees under the same scenario.  Physics helps us understand the past, present and future scenarios for the climate of our planet.  Working out what to do about our emissions and climate change requires us to look at our present and future energy budget.  But it is power that drives our civilisation, not energy.  The paths from energy to power are constrained by the unbreakable laws of entropy.  This lecture explains entropy and the big challenges involved in charting the uncertain future.  Please bring your smartphone to participate in the online polling during the lecture!

Further details: Hobart – Andrew Klekociuk (M 0418 323 341, E aip_branchsecretary_tas@aip.org.au), Launceston – Jason Dicker (M 0438 401 063, aip_branchchair_tas@aip.org.au)

http://www.events.utas.edu.au/2017/may/physics,-power-and-climate-change