2021.11.29 17:28 postmastern Токамак KSTAR удержал очень горячую плазму в течение 30 секунд
| Физики, работающие на южнокорейском токамаке KSTAR, смогли удерживать плазму с ионной температурой 100 миллионов кельвин в магнитном поле в течение 30 секунд — это новый рекорд установки. Таким образом KSTAR приблизился к мировому рекорду, который пока что, принадлежит китайскому токамаку EAST, сообщает издание Business Korea.|
На токамаке KSTAR (Korea Superconducting Tokamak Advanced Research) ведутся исследования в области длительного (до нескольких сотен секунд) удержания высокотемпературной водородной и дейтериевой плазмы в магнитном поле, а получаемые результаты будут использоваться как в проекте международного экспериментального термоядерного реактора ITER, так и при создании южнокорейского демонстрационного термоядерного реактора K-DEMO.
KSTAR обладает полностью сверхпроводящими магнитными катушками, которые сделаны из станнида триниобия и ниобий-титана и охлаждаются до температуры 4,5 кельвин. Максимальное значение тороидального магнитного поля, создаваемое катушками, составляет 3,5 тесла, большой радиус вакуумной камеры токамака равен 1,8 метра, а малый — 0,5 метра. Зажигание разряда и нагрев плазмы осуществляются за счет систем волнового нагрева и инжекции нейтралов.
Изображение горячей плазмы внутри камеры токамака KSTAR.
На токамаке ранее уже достигались несколько мировых рекордов в области времени удержания горячей плазмы. В конце ноября 2021 года физикам, работающим на токамаке, удалось удерживать плазму с температурой ионов 100 миллионов кельвин в течение 30 секунд, работая в режиме с внутренним транспортным барьером (Internal Transport Barrier), характеризующимся меньшим уровнем турбулентности в плазме. Несмотря на то, что ранее на китайском токамаке EAST был достигнут рекордный показатель 101 секунда для плазмы с температурой 120 миллионов кельвин, команда KSTAR считает, что их результат крайне важен для термоядерной энергетики, так как в случае EAST указывалась температура электронов в плазме, которые нагреть гораздо проще.
Ожидается, что в следующем году KSTAR модернизируют, в частности установят вольфрамовый дивертор, что позволит к 2026 году довести время удержания плазмы с температурой 100 миллионов кельвин до 300 секунд. Такое значение уже сравнимо с временем горения разряда в ITER, составляющее 400 секунд.
Строительство реактора ITER, начатое в июле прошлого года, должно завершиться к 2025 году.
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2021.11.29 17:28 zemthings IATSE 839 negotiations begin today!
If you're in the animation industry, looking to get into the industry, or curious about animation and negotiations process (remember that IATSE strike vote?), please check out the solidarity page. https://animationguild.org/solidarity/
This is especially important if you're looking to live and work in LA, and if you're curious about how the union works. Happy Monday!
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2021.11.29 17:28 madfut124 100%
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2021.11.29 17:28 Huntery0 Daily Lamy #96 (@YOU_0614_)
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2021.11.29 17:28 WeirdComprehensive14  Throwback to a hairier, happier time.
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2021.11.29 17:28 flacidtoaster The pc i'm building keeps beeping on startup
I'm putting together my first pc and no matter what i do it keeps beeping 3 times with an orange light on the motherboard. I've searched online and keep seeing that it's an issue with system memory. I tried removing my ram sticks and reinserting them and trying again, but no luck. What am i doing wrong?
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2021.11.29 17:28 Ezahomeschoolacademy Winter themed counting
2021.11.29 17:28 4pfcamelgang step by step on how to get free $cro on the app using a promo code
1: go to your app (crypto.comcom app) or make an account
2: go to "referral code" in the settings gear icon in the top left of the app
3: enter jb9sfz65qw into the box and hit done, so ez
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2021.11.29 17:28 AmbassadorWorf The alligator in suspended animation that guards Grandpa Sisko’s restaurant is the Gorn captain Captain Kirk fought
2021.11.29 17:28 evytb2000 Looking to pass the next couple of hours before class
Looking for some people to chat and kill some time with before I have to go to class in a couple hours. Im down to talk about anything but some of the things im into are reading, video games, and anime. Just shoot me a message
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2021.11.29 17:28 SpeedyBoot Guess your November Score!!
2021.11.29 17:28 Old_Anteater_2336 Why The Presidential Election Is An Indictment Against The Church
2021.11.29 17:28 Liam1059483872 Offers
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2021.11.29 17:28 K4T4Ri2 Made these embroidery patches. Canucks Diwali <3
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2021.11.29 17:28 Hefty-Strength-4395 seeking advice for my relationships with one of my closest friends. ty!
throwaway obv. this is gonna be long so buckle up.
so me (16m) and my friend (16f, we'll call her lisa) have been friends since the 6th grade on the first day of school. we've regularly had a pretty tumultuous, slightly toxic relationship. i have a massive ego and i talk loudly. shes brisk, slightly rude, blunt, and very hard to read. we both play instruments, me the violin, her the cello, and since being friends we've always carpooled to things like morning orchestra in middle school and now our out of school orchestra nearby. we have a small number of mutual friends that we've mostly made through music.
as i said, we've always had a slightly toxic relationship but it kind of works cause im egotistical and if one of my friends is too nice to me i tend to slightly take advantage of our friendship. im aware of this and im working on it but that is never an issue with her because she is quite cold and really really good at making you feel small and need to constantly do things to please her. this isnt always the case obviously, she can be quite warm and nice and we bond over a lot of things like music and video games. the general point im trying to make her is that despite our relationship's hurdles i really admire her as a person and i would like to continue being her friend.
recently, in the past year or so of school, we seem to have been drifting apart. we only have two classes together and for one of those its an issue (ill get there). i often feel like the only reason we ever talk is when i reach out to her and she responds and dosent try too engage or anything. this is probably because, in the midst of her being weird and lowkey ignoring me, i fucked up in a weird way so heres that situation:
- lisas friend mentions something about being at a sleepover with another one of lisas friend in collective discord which lisa is not in
- i wonder if lisa is also there
- i dm friend asking if lisa is at the sleepover too
- they say "why do u care lol"
- i say "just curious but ur right it does sound creepy how do i take it back "
- they say 'lol dw ur ok 😭 but yea its me _ and lisa":
it was super creepy obviously idk why i asked it maybve i was jealous or smt but like still it was weird. i get it. knowing they were at a sleepover they obviously immediately shared it with one another so that was awful. this was my bad and its bad cause im a stupid idiot.
lisa recently "broke up" with one of her closer friends for pretty justifiable reasons, but its an issue because the closer friend was also one of my closer friends. so me and the other friend are still friends and i obviously value that friendship but i also value lisa's friendship. so one of the two classes that i have with lisa, the other friend is there and that causes a lot of tension cause it makes me constantly have to choose which friend to spend time with.
then today, this one was rly annoying and made me decide to write this, i was walking home from school and she used to wait for me with our other friend and we would walk together but recently she hasent been doing that cause admittedly yes i do take a long time leaving the school, but today it seemed that she and her other friend were waiting for me but the second i turned the corner and made eye contact with them they turned and started walking. ugh. i was not gonna run to them obviously. they were probably waiting for their third friend who was likely coming behind me, (all of these friends im jovial and on good terms with), but didnt want to have to walk with me too. pain!
in conclusion, i really value the frienship i have with lisa but i feel as if its slipping off its hinges and starting to decline. if we were to break up, pull the bandaid off, etc, then it would be awkward cause we carpool to stuff together and have shared activities outside of school. however if i let it decline without just stopping it then ill lose a friendship that i really value and thats been with me for a long time. and finally, if i confront her about it and ask her why shes been acting this way, its likely she will be like 'if im such a terrible friend then we should just stop being friends." or something along those lines. i know because shes done it before and i have too.
im open to any advice but my goals here are to mend our relationship and replenish it to be strong and healthy again. thanks for reading this block of text. no tl;dr cause its too complicated to summarize just read it. !!!
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2021.11.29 17:28 Hypnotic_Boxer Img
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2021.11.29 17:28 souldifference Your favourite drawing exercises
I want to improve my drawing skills, especially in perspective and proportions of people.
I know the best way to learn is to just practice practice practice. And there are many helpful videos on Youtube. Only unfortunately I can not find a focus and lose myself in all tutorials.
Can you tell me your favorite tutorials / videos / exercises? :)
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2021.11.29 17:28 AmbassadorWorf Say What You See
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2021.11.29 17:28 canadian-weed How to use an interface with Podbean Live on a Mac | Podbean Support
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2021.11.29 17:28 danktopus Hello there…
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2021.11.29 17:28 neolee203 What do you hate about reddit?
2021.11.29 17:28 JLGoodwin1990 If you have to be persuaded, lied to, incentivized, coerced, bullied, socially shamed, guilt-tripped, threatened, punished and criminalized. If all of this is considered necessary to gain your compliance. You can be absolutely certain that what is being promoted is not in your best interest.
2021.11.29 17:28 facinganxiety Male Miniature Dachshund puppy seems to be developing an aggressive personality. Need help!
I’ve read tons of books and articles on this breed and their characteristics, and how to address them.
My male puppy is 14 weeks and despite me socializing him from 10 weeks, he seems to be rather fearful and aggressive towards strangers and other dogs. When strangers try to pet him or are even walking near him, he runs off scared and yelps out. After noticing this trend twice, I began picking him up and having strangers reach their hand out so he could smell them first, but still he sometimes reacts this way.
Around other dogs, even those that are not much bigger than him, he is very territorial and not very playful. He sometimes snaps or yelps, and displays signs of fear although the other dogs are exhibiting playfulness. He was fine with my two dogs at home that are relatively small, but would nip at them and didn’t know boundaries. When big dogs are near, I’ve tried picking him up to smell them in an attempt to make him feel more safe, but still reacts the same.
Sometimes he will bite my hand intentionally or snap at my face while laying down. I do not play with him with my hands, and do not promote biting at hands? I always correct him, and he definitely knows it’s wrong, but continues to do it.
How can I combat all this fear and aggression even though I’ve already socialized him pretty well? Where am I going wrong as his ownetrainer? Thank you in advance.
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