| 单词 | linear accelerator |
| 例句 | Merle Tuve, who was still struggling to produce high-energy particles with his obstreperous Tesla coil, saw little practical application for Lawrence’s curved variation on a linear accelerator. Big Science 2015-07-07T00:00:00Z Certainly if the theory of heavy neutron bombardment was sound, then the linear accelerator was the right type of machine. Big Science 2015-07-07T00:00:00Z As for Alvarez’s linear accelerator, Lawrence did not even submit an estimate—the device was too novel even to calculate a rough construction budget. Big Science 2015-07-07T00:00:00Z Essentially, he was uncoiling the cyclotron that years earlier he had conceived by twisting Rolf Wideroe’s linear accelerator into a spiral. Big Science 2015-07-07T00:00:00Z Laying aside the article, he sketched out a linear accelerator to drive protons to a million volts, the first major step toward satisfying Ernest Rutherford’s demand for 10 million volts. Big Science 2015-07-07T00:00:00Z Lawrence settled on a linear accelerator as the most efficient neutron producer for his purpose. Big Science 2015-07-07T00:00:00Z In an XFEL, a linear accelerator, or linac, shoots electrons through magnets that shake the particles sideways and make them emit x-rays. News at a glance: Diphtheria vaccine shortage, prisoner release, and iNaturalist’s growth 2023-09-20T04:00:00Z In a free electron laser, a linear accelerator, or linac, shoots a beam of high-energy electrons into a string of complex magnets called undulators. U.S. regains the lead in friendly x-ray laser “arms race” 2023-09-18T04:00:00Z The original plan for the SNS called for a conventional linear accelerator made of copper accelerating cavities. A farewell to the x-ray–generating particle accelerator that was my father’s baby 2023-05-03T04:00:00Z The $730 million linear accelerator can generate beams of any atomic nucleus from hydrogen to uranium. News at a glance: Poaching Russian scientists, criticizing Raoult’s institute, and a Tencent gift 2022-05-04T04:00:00Z The world’s most powerful ion source, the linear accelerator can fire any nucleus—from hydrogen’s single proton to uranium atoms’ massive core—into targets to produce new, unstable nuclei. More than a virus: Science’s areas to watch in 2022 2021-12-22T05:00:00Z The scheme also requires a linear accelerator with a high repetition rate, to ensure the x-ray beam encounters a fresh bunch of electrons each time it rounds its circuit of mirrors. Tiny diamond mirrors could smooth out already revolutionary x-ray lasers 2021-08-27T04:00:00Z A magnetic resonance linear accelerator generates images and delivers treatment.Credit: Making radiation oncology more personal 2020-09-22T04:00:00Z I had to lie down with a linear accelerator, so I got a lot of chances to read. Amartya Sen’s Hopes and Fears for Indian Democracy 2019-10-06T04:00:00Z Perry, who studied animal husbandry at Texas A&M University, replaced Ernest Moniz, the former chairman of the MIT physics department who directed the linear accelerator at MIT’s Laboratory for Nuclear Science. Energy Secretary Rick Perry, who's in charge of U.S. nukes, falls for seven-year-old Instagram hoax 2019-08-22T04:00:00Z The heart of the project will include the linear accelerator, consisting of 46 cryomodules working to fire the beam. Michigan State nuclear research facility set to open in 2021 2019-08-03T04:00:00Z Each cancer patient required a unique compensator designed for them - it shields the body while a device called a linear accelerator aims a photon beam toward the patient’s cancer cells. Millwright making metal artwork for hospital cancer center 2017-11-12T05:00:00Z Each cancer patient required a unique compensator designed for them — it shields the body while a device called a linear accelerator aims a photon beam toward the patient’s cancer cells. Millwright making metal artwork for hospital cancer center 2017-11-11T05:00:00Z Just three radiotherapy machines are currently operational - and none of them is a linear accelerator, the advanced Linac machines mentioned in Mr Murphy's tweet. Reality Check: More radiotherapy for dogs than people? 2017-10-12T04:00:00Z The cancer center will add a second vault with a state-of-the-art linear accelerator, which shoots beams of radiation directly onto cancer cells without damaging surrounding tissue. NW Arizona hospital to double size of its cancer center 2017-05-03T04:00:00Z In contrast, FELs fire electrons from a linear accelerator into an undulator, in which magnets of alternating polarity push and pull the electrons along a sinuous path. China opens unique free electron laser facility 2017-01-15T05:00:00Z The accident was at the Los Alamos Neutron Science Center, a late 1960s building that contains a linear accelerator. Los Alamos lab worker seriously burned in accident 2015-05-04T04:00:00Z The newly formed corporation will jointly own, operate and provide care there with a new linear accelerator. W.Va. hospitals to offer radiation therapy 2014-06-11T04:00:00Z Dirac says a fourth machine is under construction in Abuja, and this will be a linear accelerator. Reality Check: More radiotherapy for dogs than people? 2017-10-12T04:00:00Z The x-ray laser, powered by the world's longest linear accelerator, subjects atoms, molecules and solids to high-intensity x-ray pulses. Below the Surface: How Our Unconscious Rules Our Lives 2013-12-17T17:15:05.706Z It plans to use high-energy photons from a linear accelerator to kick neutrons out of molybdenum-100 to produce molybdenum-99. Radioisotopes: The medical testing crisis 2013-12-11T18:50:32.531Z The pod is accelerated to velocity by a linear accelerator, which is basically a rolled-out electric motor. Hyperloop Physics 101 With Elon Musk 2013-08-12T20:30:17Z These days — inspired by a pal who builds Tesla coils in his spare time — he’s all about capturing lightning-like fractal patterns in plastic cubes with the help of a linear accelerator. Fermilab Physicist Makes "Frozen Lightning" Art with Accelerators 2013-07-23T23:15:00.603Z So military research budgets found a home out west, at places like Stanford, whose linear accelerator attracted some of the world’s greatest scientific talents. The True Secrets of Silicon Valley 2013-07-08T11:57:00Z To that end, the federal government will fund three research institutes developing cyclotron and linear accelerator technologies for production of isotopes on a commercial scale, Natural Resources Minister Joe Oliver said. Canada to fund non-nuclear sources for medical isotopes 2013-02-28T19:04:13Z SHINE's technology uses a linear accelerator to slam deuterium ions into tritium gas, producing helium and neutrons. Radioisotopes: The medical testing crisis 2013-12-11T18:50:32.531Z How would the linear accelerator work that gets the pods going? Hyperloop Physics 101 With Elon Musk 2013-08-12T20:30:17Z Four magnetic resonance scanners, a linear accelerator and gamma knife surgery equipment, kept in the basement, were now worthless. FEMA Chief Tours Damaged NYU Langone Medical Center 2012-11-10T03:17:15Z The veterinary hospitals at the University of Wisconsin in Madison and Texas A & M now use TomoTherapy, a linear accelerator mounted on a helical device that circles the animal to deliver radiation from every angle. New Treatments to Save a Pet, but Questions About the Costs 2012-04-06T03:24:15Z RPI researchers will use a linear accelerator on campus to produce neutrons for study. Neutron dance: What happens at the heart of a nuclear reactor? 2011-04-21T23:45:02.147Z The medical physicist there had selected the wrong calibration tool to set up a highly sophisticated linear accelerator. The Radiation Boom: X-Rays and Unshielded Infants 2011-02-28T03:00:48Z While the software that drives the linear accelerator is complex, the mechanics of how the overdoses occurred is strikingly simple. The Radiation Boom: A Pinpoint Beam Strays Invisibly, Harming Instead of Healing 2010-12-29T03:06:18Z Both attack cancer cells through high-powered beams of radiation generated by a machine called a linear accelerator. Radiation Bills Raise Question Of Supervision 2010-02-26T02:05:00Z A new linear accelerator had been set up incorrectly, and the hospital’s routine checks could not detect the error because they merely confirmed that the output had not changed from the first day. 2010-01-27T15:34:00Z A linear accelerator with a missing filter would burn a hole in her chest, leaving a gaping wound so painful that this mother of two young children considered suicide. 2010-01-24T07:41:00Z A New York City hospital treating him for tongue cancer had failed to detect a computer error that directed a linear accelerator to blast his brain stem and neck with errant beams of radiation. 2010-01-24T07:41:00Z The data is then sent to a third computer that controls the linear accelerator. The Radiation Boom: A Pinpoint Beam Strays Invisibly, Harming Instead of Healing 2010-12-29T03:06:18Z Its cancer unit, managed by Aptium Oncology, a unit of one of the world’s leading pharmaceutical companies, AstraZeneca, was marketing a new linear accelerator as though it had Mr. Jerome-Parks specifically in mind. 2010-01-24T07:41:00Z The solution, the advertisement said, was a linear accelerator with 120 computer-controlled metal leaves, called a multileaf collimator, which could more precisely shape and modulate the radiation beam. 2010-01-24T07:41:00Z No Fail-Safe Mechanism The investigation into what happened to Mr. Jerome-Parks quickly turned to the Varian software that powered the linear accelerator. 2010-01-24T07:41:00Z The linear accelerator was missing a vital command — to insert the wedge. 2010-01-24T07:41:00Z Then, three months ago, concerned that radiation might leak outside the cone, Varian warned customers that its software did not recognize cone attachments on the type of linear accelerator involved in the Evanston accidents. The Radiation Boom: A Pinpoint Beam Strays Invisibly, Harming Instead of Healing 2010-12-29T03:06:18Z |
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