Tootfinder

🔊 #NowPlaying on #BBCRadio3:
#CarolsAcrossTheCountryASeasonalJourney
- Live from the University Chapel of St Andrews in Fife
Kate Molleson introduces seasonal music and poetry from the historic St Salvator’s Chapel in the heart of Scotland’s oldest university town with live music from the Chapel Choir.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mk1x

High-precision luminescence cryothermometry strategy by using hyperfine structure
Marina N. Popova, Mosab Diab, Boris Z. Malkin
https://arxiv.org/abs/2511.19088 https://arxiv.org/pdf/2511.19088 https://arxiv.org/html/2511.19088
arXiv:2511.19088v1 Announce Type: new
Abstract: A novel, to the best of our knowledge, ultralow-temperature luminescence thermometry strategy is proposed, based on a measurement of relative intensities of hyperfine components in the spectra of Ho$^{3 }$ ions doped into a crystal. A $^{7}$LiYF$_4$:Ho$^{3 }$ crystal is chosen as an example. First, we show that temperatures in the range 10-35 K can be measured using the Boltzmann behavior of the populations of crystal-field levels separated by an energy interval of 23 cm$^{-1}$. Then we select the 6089 cm$^{-1}$ line of the holmium $^5I_5 \rightarrow ^5I_7$ transition, which has a well-resolved hyperfine structure and falls within the transparency window of optical fibers (telecommunication S band), to demonstrate the possibility of measuring temperatures below 3 K. The temperature $T$ is determined by a least-squares fit to the measured intensities of all eight hyperfine components using the dependence $I(\nu) = I_1 \exp(-b\nu)$, where $I_1$ and $b = a\nu \frac{\nu}{kT}$ are fitting parameters and a accounts for intensity variations due to mixing of wave functions of different crystal-field levels by the hyperfine interaction. In this method, the absolute and relative thermal sensitivities grow at $T$ approaching zero as $\frac{1}{T^2}$.and $\frac{1}{T}$, respectively. We theoretically considered the intensity distributions within hyperfine manifolds and compared the results with experimental data. Application of the method to experimentally measured relative intensities of hyperfine components of the 6089 cm$^{-1}$ PL line yielded $T = 3.7 \pm 0.2$ K. For a temperature of 1 K, an order of magnitude better accuracy is expected.
toXiv_bot_toot

Good Morning #Canada
This has been quite the roller-coaster year for my wife and I. If there was one thing that I would be thankful for it would be our much maligned #Healthcare system. Through early testing, in April 2025, both our daughters were diagnosed with a genetic defect that significantly increases risk of cancer. Breast cancer was found in our oldest daughter and her treatment included surgery, chemo, and radiation. The prognosis for a longer life is now excellent. The youngest is facing potential preventative surgery to reduce her risk. After diagnosis the medical response was immediate and both daughters have numerous stories about caring individuals that have provided treatment, counseling, and empathy.
One man had a huge impact on Canada’s status as an important centre for genetics research - Dr. Lou Siminovitch. Here is his story about how he helped establish 4 different research organizations in Toronto.
#CanadaIsAwesome #CanadianHeroes
https://www.cbc.ca/news/canada/toronto/dr-lou-siminovitch-the-force-behind-early-genetics-research-in-canada-dies-at-age-100-1.5981522

🔊 #NowPlaying on #BBCRadio3:
#NewMusicShow
- Huddersfield Contemporary Music Festival: Explore Ensemble and ONCEIM
Kate Molleson presents live from the opening weekend of this year's event and features new music by Bryn Harrison and Christian Marclay.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mc18

🔊 #NowPlaying on #BBCRadio3:
#20thCenturyRadicals
- Halim El-Dabh: A life of vibration
Kate Molleson and Gillian Moore shine new light on the 'modern' music of the 20th century. This week, Kate explores the world of the pioneering Egyptian composer Halim El-Dabh.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002q400

🔊 #NowPlaying on #BBCRadio3:
#ComposerOfTheWeek #COTW
- Max Roach (1924-2007)
Kate Molleson is joined by Kevin LeGendre to explore the life and work of drummer and composer Max Roach. Today exploring the dizzying range of collaborations in his final decades.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mbf4

🔊 #NowPlaying on #BBCRadio3:
#ComposerOfTheWeek #COTW
- Max Roach (1924-2007)
Kate Molleson is joined by Kevin LeGendre to explore the life and work of drummer and composer Max Roach. Today focusing on Max Roach as a political force.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mb7v

🔊 #NowPlaying on #BBCRadio3:
#ComposerOfTheWeek #COTW
- Max Roach (1924-2007)
Kate Molleson is joined by Kevin LeGendre to explore the life and work of drummer and composer Max Roach. Today focusing on his collaboration with Clifford Brown.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mcr6

🔊 #NowPlaying on #BBCRadio3:
#ComposerOfTheWeek #COTW
- Antonín Dvořšk (1841-1904)
Kate Molleson explores the life and loves of Antonin Dvořšk. Today, all aboard as we join him on memorable journeys and discover his passion for all things transport.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002036d

🔊 #NowPlaying on #BBCRadio3:
#ComposerOfTheWeek #COTW
- Antonín Dvořšk (1841-1904)
Kate Molleson explores the life and loves of Antonín Dvořšk. Today, one of the guiding forces in everything he did and created - his nearest and dearest.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002031m