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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A glimpse into the future of radiation therapy

Physics World

Citing the ESTRO 2022 programme, she noted that many researchers are already developing adaptation and personalization for every part of the radiation treatment chain. Fewer, higher radiation doses safe for early breast cancer.

Scatter imaging during lung stereotactic body radiation therapy

Physics World

Due to breathing motion, lung tumours move during stereotactic body radiation therapy (SBRT). Scatter imaging, which collects photons scattered out of the radiation therapy beam, is a potential technique for real-time tracking of lung tumours. Want to take part in this webinar?

Carbon nanotubes help space-bound electronics resist radiation damage

Physics World

As space missions venture ever further afield, spacecraft will inevitably be exposed to greater amounts of cosmic radiation that can damage or even destroy their onboard electronics. of this radiation, while the remaining 0.1%

Entangling a live tardigrade, radiation warning on anti-5G accessories

Physics World

Tardigrades are much more resilient than humans when it comes to exposure to ionizing radiation. The post Entangling a live tardigrade, radiation warning on anti-5G accessories appeared first on Physics World.

Immunotherapy plus radiotherapy: the next big opportunity in radiation oncology?

Physics World

In short: the potential for immunotherapy agents to scale the regional efficacy of radiation treatment, while on the flip-side localized radiation acts as an adjuvant for immunotherapy of solid tumours and lymphomas. Better together?

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.

Intense radiation pressure enables selective acceleration of carbon ion beams

Physics World

At these extreme intensities, the laser pulse is able to push the plasma electrons forward by radiation pressure, which accelerates the carbon and protons. The post Intense radiation pressure enables selective acceleration of carbon ion beams appeared first on Physics World.

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.

Radiation detectors could help find ancient buildings and dinosaur bones

Physics World

The post Radiation detectors could help find ancient buildings and dinosaur bones appeared first on Physics World.

Deep learning can decrease radiation dose in paediatric CT scans

Physics World

Because children are more sensitive to ionizing radiation than adults, using the lowest possible radiation dose to obtain diagnostic quality images is the goal of every radiology professional performing paediatric CT.

Chernobyl radiation spike probably from Russian tanks disturbing dust

New Scientist

After Russian forces captured the ruined Chernobyl nuclear power plant on 24 February, sensors at the site report a spike in radiation levels

Geometric distortion characterization using QUASAR™ MRID3D in radiation oncology: 1.5T MRI and 0.35T MR-LINAC

Physics World

MR-guided radiation therapy (MRgRT) has been running routine clinical practice. MRI and 0.35T MR-LINAC using QUASAR™ MRID 3D Geometric Distortion Analysis System in radiation oncology. The post Geometric distortion characterization using QUASAR™ MRID3D in radiation oncology: 1.5T

Advances in nuclear medicine technology reduce radiation exposure, shorten scan times

Physics World

CT-free PET reduces radiation dose. But the CT scan performed alongside to obtain attenuation maps can deliver a substantial radiation dose, negating these low-dose benefits.

Chernobyl radiation spike may have just been electrical interference

New Scientist

High radiation levels seen as Russian forces captured Chernobyl in February were put down to contaminated topsoil being disturbed, but experts now believe they could have been due to interference with wireless sensors

NHS England’s investment in big data insights will fast-track innovation in radiation oncology

Physics World

The long-term vision is compelling, with ProKnow very much front-and-centre as NHS England cancer centres seek to reimagine best practice in the planning, delivery and management of their radiation therapy services while personalizing treatment to meet the clinical needs of individual patients.

Cherenkov light could enable dosimetry of molecular radiation therapy

Physics World

Developing a dosimetry technique: Spectrally-integrated Cherenkov light intensity at the patient surface for a molecular radiation treatment of papillary thyroid carcinoma, with radioisotope uptake distributed in the tumour.

Radiation can reverse heart rhythm disorders by reprogramming damaged cardiac cells

Physics World

Louis have found that radiation may reverse heart rhythm disorders, such as arrhythmias, long-term by reprogramming damaged heart cells. What we’ve seen is that radiation therapy can modulate how fast the impulse travels by changing the expression of genes and proteins in the heart.”.

Chernobyl scientists want robots and drones to monitor radiation risk

New Scientist

Russian troops destroyed and stole equipment used to monitor radiation levels at Chernobyl, requiring the creation of a new sensor network that could involve drones and robots to avoid landmines in the area

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

Immunotherapy plus a burst of radiation treats brain tumours in mice

Physics World

Standard-of-care for these tumours typically involves some combination of surgery, radiation therapy and chemotherapy, but patients still often survive only a few months following treatment. Radiation therapy is perhaps the most important nonsurgical treatment for glioblastoma.

Martian cave entrances may offer a life-friendly radiation shield

New Scientist

The surface of Mars is bombarded with far more dangerous radiation than Earth, but the area just inside caves may shield from UV rays while providing just enough light for life

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).

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.

Space test dummies will measure female radiation risk for first time

New Scientist

Two mannequins designed to represent female bodies will measure radiation exposure on NASA's Artemis I mission later this year, in preparation for putting the first woman on the moon

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

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.

Chernobyl power cut sparks fears of potential for radiation leaks

New Scientist

Vital cooling systems for controlling nuclear waste at the decommissioned Chernobyl nuclear power plant are offline, leading to concerns that radioactive waste might escape

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?

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

Chernobyl staff denied access to radiation monitoring lab

New Scientist

Scientific monitoring of the Chernobyl nuclear power plant is being affected by the Russian invasion of Ukraine

NASA funds experimental radiation shield and Mars climbing robot

New Scientist

Several futuristic projects have just been awarded money through NASA’s Innovative Advanced Concepts programme – here are New Scientist's top five choices

Long-lasting radiation shields may make super-Earths friendly for life

New Scientist

Life on Earth is made possible by our planet’s magnetosphere – an invisible radiation shield that protects the surface – now it turns out that super-Earths could have magnetospheres too

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.

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

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

Ostrich necks act as a radiator to control their head temperature

New Scientist

Infrared images of ostrich necks show that they help the birds keep their heads cool in warm temperatures, lowering their heat stress and helping them reproduce more successfully

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.)

New Pitt-Duquesne Study Shows Higher Exposures To Radiation In Road Dumping Of Drilling Wastewater When Appropriate Exposure Scenarios Are Used

PA Environment Daily

The new study also points out, “When applied to roads, the NORM [naturally occurring radiation] in O&G [oil and gas well] brine products would accumulate in streams and engineered systems receiving storm water (Ra [radium] accumulates in stream sediments downstream of brine disposal facilities.

Strange gamma ray flashes from lightning storms may have explanation

New Scientist

Flashes of gamma radiation that seem to be produced by lightning storms have puzzled researchers for some time, but now there may be an explanation