@article{oai:nifs-repository.repo.nii.ac.jp:00010926,
 author = {SAKAKIBARA,  Satoru and WATANABE,  Kiyomasa and FUNABA,  Hisamichi and SUZUKI,  Yasuhiro and OHDACHI,  Satoshi and IDA,  Katsumi and TANAKA,  Kenji and TOKUZAWA,  Tokihiko and MORISAKI,  Tomohiko and OSAKABE,  Masaki and TAKEIRI,  Yasuhiko and LHD, Experiment Group},
 issue = {6},
 journal = {Nuclear Fusion},
 month = {Apr},
 note = {0000-0002-3306-0531, In the large helical device, plasma with more than 4% average beta was successfully produced by multi-pellet injections in a regime with a collisionality one order of magnitude lower than that in previous high-beta operations. An improvement in particle confinement was observed during a high-beta discharge produced by a gas puff, and particle flux to the divertor was reduced by more than 40%. High instabilities at the plasma edge occurred and suppressed the increment of the average beta to 3.4%. A spontaneous change in the magnetic topology contributes to an increase in the average beta value while triggering the excitation of edge MHD instabilities.},
 title = {Extension of high-beta plasma operation to low-collisionality regime},
 volume = {57},
 year = {2017}
}