Introducing the non-radiating antenna

Physics World

An international team of physicists has created what might seem like a contradiction in terms: a non-radiating source of electromagnetism. Maxwell’s equations tell us that accelerating charges radiate energy in the form of electromagnetic waves.

Terahertz radiation drives compact ultrafast electron diffractometer

Physics World

The team, led by Dongfang Zhang and Franz Kärtner at the Center for Free-Electron Laser Science in Hamburg, created their instrument by compressing bunches of electrons to ultra-short durations, using millimetre-wavelength terahertz radiation.

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Terahertz radiation is created using semiconductor surface states

Physics World

A highly efficient way to convert optical photons into terahertz radiation has been developed by researchers in the US and Germany. However, creating practical sources of terahertz radiation is challenging.

Novel brachytherapy device treats eye cancer with intensity-modulated radiation

Physics World

Plaque brachytherapy treatments deliver radiation to eye tumours via radioactive sources called pellets or seeds, which are placed in a device called a plaque that is sewn onto the surface of the eye.

Martian Crust Could Sustain Life through Radiation

Scientific American

Meteorites reveal that so long as groundwater is present, the Martian subsurface is habitable. -- Read more on ScientificAmerican.com. Advances Biology Space & Physics Extraterrestrial Life

New Space Radiation Limits Needed for NASA Astronauts, Report Says

Scientific American

Although meant to minimize risks to human health, the proposed new limits would still be exceeded by any conceivable near-future crewed voyage to Mars. -- Read more on ScientificAmerican.com. The Sciences Space

Low-dose radiation plus immunotherapy can eliminate metastatic cancer in mice

Physics World

Targeted radionuclide therapy (TRT) can increase the effectiveness of immunotherapy, helping to eradicate metastatic cancer in mice even when the radiation dose is too low to destroy the cancer outright. 86 Y-NM600 uptake in mice with a single B78, NXS2 or 4T1 tumour (arrowheads).

Using snakes to monitor Fukushima radiation

Environmental News Bits

Read the full story from the University of Georgia. Ten years after one of the largest nuclear accidents in history spewed radioactive contamination over the landscape in Fukushima, Japan, a University of Georgia study has shown that radioactive contamination in the Fukushima Exclusion Zone can be measured through its resident snakes. The team’s findings, published in… Read more → Publications Wildlife

Physics for better swimming and judo, solar-flare radiation risk on aircraft

Physics World

But should they be worried about radiation from solar flares that they could be exposed to when flying? However, they found that radiation levels were not high enough to justify current countermeasures such as flying at a lower altitude where radiation levels are lower during a GLE.

Patient alignment with lasers from LAP: why lasers are essential for the workflow in your radiation therapy

Physics World

There have been enormous improvements in radiation therapy over the last 20 years. During his studies at KIT (Karlsruhe Institute of Technology) he gained broad experience in different workflows in radiation therapy while analysing them. Want to take part in this webinar?

Estimating patient size from X-ray data improves radiation risk assessment

Physics World

billion diagnostic imaging exams are performed each year across the globe, with medical radiation use accounting for 98% of the population’s dose from artificial sources. Web-based tool estimates foetal radiation dose from CT scans.

Smart fabric radiates heat to keep you cooler in the sun

New Scientist

Clothes and covers made of a smart fabric that radiates heat and reflects light could help people and objects out in the sun stay several degrees cooler

Reinforcing the case for independent QA in the radiation oncology clinic

Physics World

In radiation therapy, patient safety starts and ends with independent QA, a comprehensive programme of machine, patient-specific and workflow checks for identifying – and mitigating – human and system errors in an expanding universe of complex treatment variables.

Crisis in a lockdown: how NIST coped with a radiation leak

Physics World

however, radiation monitors in the building detected above-normal background radioactivity, consisting of fission fragments from the ruptured cladding of a fuel element. No indications of elevated radiation levels outside the building.”

How serious is the nuclear power plant radiation leak in China?

New Scientist

One of the companies behind a new, French-designed nuclear reactor at Taishan in Guangdong, China, has written to the US government warning of an “imminent radiological threat” at the plant, but there doesn't appear to be any danger

Road Dumping Of Drilling Wastewater; Radiation Monitoring Of Drilling Wastes; More On DEP Oil & Gas Advisory Board Agenda Sept. 9

PA Environment Daily

DEP’s Oil and Gas Technical Advisory Board is scheduled to have a meeting September 9 with several critical issues on the agenda, including road dumping of conventional drilling wastewater, radiation monitoring of drilling and other wastes, and review of draft conventional drilling regulations.

DEP Citizens Advisory Council Meets Oct. 19 To Hear Report On Radiation Decontamination Of Oil & Gas Wastewater Treatment Facilities, Reactors, Waste Sites

PA Environment Daily

David Allard, Director of DEP’s Bureau of Radiation Protection, will lead the presentation providing an overview of the decontamination and decommissioning process and how Pennsylvania and DEP are involved. Photo: Radiation contamination at oil and gas wastewater treatment site.)

Ozone Hole Would Have Killed Plants and Raised Global Temperatures

Scientific American

Without the Montreal Protocol, more solar radiation would have destroyed plants, lessening the CO2 they absorb. -- Read more on ScientificAmerican.com.

Ozone 93

Black-hole laser could have quantum computing applications

Physics World

An electromagnetic analogue for a black hole laser – a system that could theoretically amplify Hawking radiation from the event horizon of a black hole and make it observable – has been proposed by Haruna Katayama of Hiroshima University in Japan. Entangled radiation.

Personalized 3D-printed shields protect healthy tissue during radiotherapy

Physics World

One of the primary goals of radiation therapy is to deliver a large radiation dose to cancer cells whilst minimizing normal tissue toxicity. Materials with a high atomic number (Z), often known as radiation-attenuating materials, can be used to shield normal tissue from radiation.

Cosmic rays threaten Martian agriculture, rattlesnakes play a clever trick on your spatial perception

Physics World

Although Earth is also constantly bombarded by cosmic rays, ground-level radiation on Mars is about 17 times higher. Now, Nyncke Tack and colleagues at Wageningen University and the Research and the Reactor Institute Delft have studied how this radiation affects plants.

A review of AAPM task groups 218 and 219

Physics World

This lead to his expanded interest in radiation dosimetry, quality assurance, and radiation measurements/simulations. His doctoral thesis was focused on linear accelerators and investigated calibrating radiation detectors closer to clinical delivery conditions.

Orange glow and plants below: Wildfire smoke’s impact on crops

HumanNature

Smoke-driven changes in radiation have real world consequences beyond making for good film fodder and beautiful sunsets. For one, plants rely on solar radiation to grow, and the U.S. Since 1994, the USDA has monitored solar radiation at sites across the U.S.,

Take a Stand, Make Decisions Better

Environmental Law Centre

Take a Stand, Make Decisions Better: Alberta Court of Appeal reboots standing test of the Alberta Environmental Appeals Board Normtek Radiation Services Ltd v Alberta Environmental Appeal Board, 2020.

New Climate Research From a Year-Long Arctic Expedition Raises an Ozone Alarm in the High North

Inside Climate News

Warming of the surface of the Arctic is matched by a colder polar vortex high in the atmosphere, which is speeding the breakdown of the Earth’s shield against ultraviolet rays.

Ozone 113

Hot Zones: Urban Heat Islands

Environmental News Bits

Paved roads, parking lots, and buildings absorb and retain heat during the day and radiate that heat back into the surrounding… Read more → Publications Sustainable communities Urban heat islandsDownload the document. Urban heat islands are metropolitan places that are hotter than their outlying areas, with the impacts felt most during summer months. About 85% of the U.S. population lives in metropolitan areas.

Proton arc therapy: do we need it; can we deliver it?

Physics World

Radiotherapy plays an essential role in the management of cancer, with roughly half of all cancer patients receiving radiation as part of their treatment. Radiation-therapy techniques.

X-ray guidance keeps cardiac radioablation on target

Physics World

With a single radiation treatment, a patient’s irregular heartbeat will be corrected; but there’s a catch. One challenge Hindley foresees before the algorithm is implemented clinically is justifying the additional radiation dose the patient receives with X-ray imaging guidance.

Intelligent automation with RadCalcAIR and 3D dose analysis

Physics World

With the increasingly complex workloads in your radiation oncology department, the demands on your time must be intelligently triaged. Want to take part in this webinar? Join the audience.

Infrared cloaking device could make objects invisible to thermal cameras

Physics World

D’oh: simulation of infrared radiation from a heat source being blocked by an object shaped like the head of Homer Simpson (left). This calculated radiation is re-emitted by the heat sources on the part of the ring facing the observer, which is a thermal camera.

Solar polarization paradox resolved at last

Physics World

Atomic physicists duly designed laboratory experiments to test this idea using broadband radiation, lasers and other light sources, but nothing conclusive was found.

We’re all going on a geeky holiday

Physics World

Tom Scott is a radiation researcher at the University of Bristol whose work regularly takes him to Chernobyl, Ukraine, the site of the world’s worst nuclear disaster. Why lie on a beach when you could go to Chernobyl?

Best in physics: dose-optimized MLC tracking and radio-immunotherapy

Physics World

To evaluate this approach, the researchers simulated radiation treatments of locally advanced prostate cancer using three methods: dose-optimized multi-target tracking; geometric-based tracking and no motion tracking.

Radiotherapy innovation: optimize the physics, but don’t ignore the biology

Physics World

I’d like to reflect on the relationship between the successes we’ve had with physics and technology – and the relative neglect of the biology – in radiation therapy.” Exceptional contribution: Natalka Suchowerska received the ESTRO honorary membership award for her achievements in innovation.

FLASH radiotherapy: oxygen depletion is not the sole cause

Physics World

Hypoxic cells are 2–3 times more resistant to radiation than oxygenated cells. We decided to measure the amount of oxygen being consumed by radiation with our oxygen sensors,” says first author Jeannette Jansen , a PhD student in Joao Seco ’s group at the German Cancer Research Center (DKFZ).

CIRS Zeus Phantom for E2E QA and testing of MRgRT systems

Physics World

He is well known in the radiology and radiation therapy industry throughout the US and internationally. He has a clinical background as a registered radiation therapist and medical dosimetrist working in both university academic and community hospital healthcare institutions.

Automated QA in clinical environment: RadCalc set up for clinics and remote access

Physics World

He has several years experience in radiation therapy, dosimetry and working with medical devices. With his clinical and industrial background his main goal is to support LAP and the customers in the application of the software-based QA procedures in radiation therapy.

AR6 of the best

Real Climate

Sea level rise is a big deal Use, abuse and misuse of the CMIP6 ensemble The radiative forcing bar chart has gone full circle Droughts and floods are complicated Don’t mention the hiatus. The radiative forcing bar chart now converted to temperature.

Simulations herald rethink for all-inorganic perovskite solar cells

Physics World

In real cells, however, various non-radiative recombination processes also take place, dragging down efficiency. Solar power has a major role to play in cutting carbon emissions, but producing photovoltaic cells from silicon – the long-time market leader – is an energy-intensive process.

Towards Auger therapy with iodine-infused nanoparticles

Physics World

Cancer radiation therapy is rapidly changing. Utilization of high-Z [high atomic number] elements [such as iodine] that can release electrons upon X-ray irradiation can bring further advances in radiation therapy,” says senior author Fuyuhiko Tamanoi from Kyoto University.