User talk:ComplexRational

This is ComplexRational's talk page, where you can send him messages and comments.

Put new text under old text. Click here to start a new topic. New to Wikipedia? Welcome! Learn to edit; get help. Assume good faith Be polite and avoid personal attacks Be welcoming to newcomers Seek dispute resolution if needed

Archives: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13Auto-archiving period: 30 days

Hello,

The Wikimedia Foundation is conducting a survey of Wikipedians to better understand what draws administrators to contribute to Wikipedia, and what affects administrator retention. We will use this research to improve experiences for Wikipedians, and address common problems and needs. We have identified you as a good candidate for this research, and would greatly appreciate your participation in this anonymous survey.

You do not have to be an Administrator to participate.

The survey should take around 10-15 minutes to complete. You may read more about the study on its Meta page and view its privacy statement .

Please find our contact on the project Meta page if you have any questions or concerns.

Kind Regards,

WMF Research Team

BGerdemann (WMF) (talk) 19:23, 23 October 2024 (UTC) [reply]

The full article is available from Lund University. :) Double sharp (talk) 17:06, 24 October 2024 (UTC)[reply]

@Double sharp: Thanks for sharing! ^Complex/_Rational 17:08, 24 October 2024 (UTC)[reply]

Happy First Edit Day! Hi ComplexRational! On behalf of the Birthday Committee, I'd like to wish you a very happy 6th anniversary of the day you made your first edit and became a Wikipedian! Sdkb talk 05:32, 28 October 2024 (UTC)[reply]

Sdkb ^talk 05:32, 28 October 2024 (UTC)[reply]

@Sdkb: Thank you! Here's to another trip around the Sun! ^Complex/_Rational 12:46, 28 October 2024 (UTC)[reply]

Happy First Edit Day! Hi ComplexRational! On behalf of the Birthday Committee, I'd like to wish you a very happy sixth anniversary of the day you made your first edit and became a Wikipedian! DaniloDaysOfOurLives (talk) 21:42, 28 October 2024 (UTC)[reply]

@DaniloDaysOfOurLives: Thank you! ^Complex/_Rational 22:53, 28 October 2024 (UTC)[reply]

New paper. Also of interest to Nucleus hydro elemon. :) Double sharp (talk) 04:26, 1 November 2024 (UTC)[reply]

@Double sharp: Cool, thanks! Fortunately this one is open-access. ^Complex/_Rational 13:50, 1 November 2024 (UTC)[reply]

Another exciting discovery, thanks! It seems like all the recent discoveries are light nuclides. For the heavier nuclides, it seems like light isotopes perform better in synthesizing Uue. Nucleus hydro elemon (talk) 13:53, 1 November 2024 (UTC)[reply]

@Nucleus hydro elemon: I suspect people stick to the heavy ones because they want the half-life of the product to be long enough to detect. ;) Double sharp (talk) 03:49, 2 November 2024 (UTC)[reply]

doi:10.1142/S0218301320500536 predicts among ^284-308Uue, ^296,300,302Uue have a half-life of >100 μs. (^297,308Uue may reach this bar or not depends on prediction used) Only ²⁹⁶Uue is a reasonable long-lived isotope to be synthesized among them. ²⁹⁷Uue requires either 2n channel, ²⁵⁰Cm, or einsteinium, while even heavier isotopes are more unlikely to produce.

On the other hand, I found lighter isotopes ^292,293Uue interesting because the whole decay chain is unknown. However, their predicted half-lives of ~30 μs is troublesome. Nucleus hydro elemon (talk) 08:22, 2 November 2024 (UTC)[reply]

If only ²⁴¹Am+⁴⁸Ca and ²³¹Pa+⁴⁸Ca would get studied. :( Double sharp (talk) 12:06, 2 November 2024 (UTC)[reply]

It does indeed seem that even-Z SHEs have been getting much of the attention lately. Meanwhile, the gap between cold and hot fusion persists for odd-Z elements, and Mt and Rg each have one isotope that has been directly synthesized... decades ago. ^Complex/_Rational 16:32, 2 November 2024 (UTC)[reply]

Since you mention ²⁶⁶Mt from 1982: Peter Armbruster and Gottfried Münzenberg both died this year. :( (Sigurd Hofmann died in 2022.) Double sharp (talk) 16:36, 2 November 2024 (UTC)[reply]

I guess the even-Z gap gets studied more because it looks like 120 is going to be easier than 119. Maybe once 120 is discovered, we'll see a renaissance of interest in the odd ones. Double sharp (talk) 16:43, 2 November 2024 (UTC)[reply]

@Double sharp: I stumbled upon this, which mentions a proposed search for ²⁷⁶Rg and ²⁷²Mt (along with ²⁵⁰Lr and ²⁵⁴Db) – though neither a reaction nor an experimental timeframe are described. If year 1 was 2020, we're in year 5, and I haven't found anything more recent, so I wonder what became of this.

There was also an SHE-related conference earlier this year at FRIB, though I don't know if the conference proceedings have been uploaded anywhere. ^Complex/_Rational 02:06, 11 November 2024 (UTC)[reply]

Well, the ⁵⁰Ti agenda happened quite similarly to the plan of those slides, with the ²⁴⁴Pu+⁵⁰Ti reaction having succeeded. Perhaps the other things happened, or perhaps it was decided that going for 120 was more exciting. Yeah, that's kind of a non-answer. ;) Double sharp (talk) 04:29, 11 November 2024 (UTC)[reply]

New presentation from JINR! With ²⁸⁹Lv! And ²⁸⁰Cn! And a p2n channel leading to ²⁸⁹Mc!! Double sharp (talk) 15:19, 2 November 2024 (UTC)[reply]

@Nucleus hydro elemon: Since you just noted that lately it had mostly been light nuclides getting discovered! :D Double sharp (talk) 15:20, 2 November 2024 (UTC)[reply]

@Double sharp: Thanks for sharing the exciting news! I suppose the new isotopes could be added, but I'm not sure that WP:CALC permits computing half-lives in the absence of aggregated data and complete analysis... so a more detailed update will likely have to wait. ^Complex/_Rational 15:34, 2 November 2024 (UTC)[reply]

Yeah, I've confined myself to just adding their existence. (Well, I guess their colour in the Table of nuclides can be handwaved as obvious; computing the detailed half-life is too much, but it's too obvious that it must be <1 d. :D) Double sharp (talk) 15:34, 2 November 2024 (UTC)[reply]

As the decay chain of ²⁸⁹Lv passes through ²⁶⁹Sg, its half-life must be revised. Perhaps the most stable isotope of Sg will become ²⁶⁹Sg again. Nucleus hydro elemon (talk) 06:52, 3 November 2024 (UTC)[reply]

Wow, one more nuclide with Z:N = 2:3 found, whoopee! Discovering ²⁹⁵Og in the future would complete this huge family from ⁵He to ²⁹⁵Og, spanning from the beginning to the end of the periodic table. 129.104.65.2 (talk) 00:06, 3 November 2024 (UTC)[reply]

I'm looking forward to synthesis of ^295,296Og with ^250,251,252Cf + ⁴⁸Ca and ²⁴⁸Cm + ⁵⁰Ti. Besides that, I'm also hoping for the discovery of ²⁹³Og to clean up Ninov's mess completely. Nucleus hydro elemon (talk) 06:59, 3 November 2024 (UTC)[reply]

@Nucleus hydro elemon: You know what else I want? A sustained search for the pxn channel from ²⁴⁸Cm+⁴⁸Ca to get heavier Mc isotopes (to see if they really electron-capture their way to the middle of the island), plus sustained looks at ²⁴²Cm+⁴⁸Ca to get even lighter Lv isotopes. And the odd-Z cases too, but you already know that. I guess the dream of using ²⁵⁰Cm will have to languish in limbo for a long while. :)

I guess a sustained ²⁴⁹Cf+⁴⁸Ca campaign might well actually find ²⁹³Og in the 4n channel. Double sharp (talk) 07:03, 3 November 2024 (UTC)[reply]

²⁴⁸Cm(⁴⁸Ca,p3n)²⁹²Mc has extremely bad cross section (12 fb).^[1] I found nothing about ²⁴²Cm+⁴⁸Ca, probably because ²⁴²Cm is too unstable, even more unstable than ²⁴⁹Bk. I think ^238-240Pu+⁵⁰Ti makes more sense, but there exists only a prediction 43 years ago, which states ²³⁸Pu(⁴⁸Ca,4n)²⁸⁴Lv has a cross section of a few pb.^[2]

I have a complicated feeling towards nuclides at the island of stability, especially if they have a half-life in centuries or millennia. After formed from the EC chain, the atom will outlive any SHE researcher, so no one can know its decay properties. It might be hard to detect the existence of this long-lived atom. I don't think chemistry can be done, as chemistry done in a single atom relies on its radioactive decay, which this long-lived atom will never do in a reasonable timeframe. Nucleus hydro elemon (talk) 08:06, 3 November 2024 (UTC)[reply]

@Nucleus hydro elemon: True, but I guess an ER that has no plausible SF event following it would be quite a sign that the island's been reached at least. And yeah, ²⁴²Cm is perhaps a bit ambitious, but at least ²⁴³Cm has a half-life of a few decades and will get us most of the way. :) Double sharp (talk) 08:11, 3 November 2024 (UTC)[reply]

Found a prediction about ²⁴³Cm+^46,48Ca.^[3] It also predicts ²⁴⁵Cm+⁴⁶Ca, but this reaction is worse than ²⁴³Cm+⁴⁸Ca in all channels, so I ignored it. Cross sections are square bracketed and in pb.

• ²⁴³Cm(⁴⁸Ca,3n)²⁸⁸Lv [1.53]
• ²⁴³Cm(⁴⁸Ca,4n)²⁸⁷Lv [0.36]
• ²⁴³Cm(⁴⁸Ca,5n)²⁸⁶Lv [0.29]
• ²⁴³Cm(⁴⁶Ca,3n)²⁸⁶Lv [1.69]
• ²⁴³Cm(⁴⁶Ca,4n)²⁸⁵Lv [0.27]
• ²⁴³Cm(⁴⁶Ca,5n)²⁸⁴Lv [0.17]

Nucleus hydro elemon (talk) 09:59, 3 November 2024 (UTC)[reply]

The funny thing is that ²⁴⁴Pu+⁵⁰Ti (0.44+0.58
−0.28 pb) seems to have a larger cross-section than ²⁰⁸Pb+⁷⁰Zn (0.078+0.179
−0.065 pb). If not for the serendipitous ²⁹⁴Og atom produced in 2012 during a Ts campaign (when the ²⁴⁹Bk target had significantly decayed), I wonder if it might've been tried last decade, as it would both confirm 118 by producing its daughter ²⁹⁰Lv, and provide useful experience with ⁵⁰Ti back when people were already thinking about 119 and 120. Though looking at the trend, it seems distressingly plausible that current technology levels have simply made 119 and 120 go from "it's not gonna happen" to "sure, if you're willing to spend years and years like RIKEN did with 113"... Double sharp (talk) 08:14, 3 November 2024 (UTC)[reply]

The source I added to moscovium also discusses αxn channels, and suggests they may be more favorable to produce heavier Mc isotopes from ²⁴⁹Bk and ⁴⁸Ca. On the other side, some of the neutron deficient even–even isotopes may have very short SF half-lives (predicted by several sources and supported by observations of ²⁸⁴Fl, ²⁸²Cn, and now ²⁸⁰Cn), so they may not be readily detectable even with cross sections within experimental detection limits. ^Complex/_Rational 15:08, 3 November 2024 (UTC)[reply]

I'm kind of wondering how we should handle the successful pxn – it doesn't fit quite well with how the superheavy "isotopes of X" pages are currently handled. Well, what a happy problem to have! Double sharp (talk) 15:53, 2 November 2024 (UTC)[reply]

@Double sharp: And a happy problem to solve! Time to update island of stability next while we await detailed results. ^Complex/_Rational 16:08, 2 November 2024 (UTC)[reply]

News and updates for administrators from the past month (October 2024).

Administrator changes

• Crisco 1492

• Babajobu
• Daniel
• Elf
• Jayron32
• Thue
• Wugapodes

CheckUser changes

Maxim

Oversighter changes

Maxim

Guideline and policy news

• Following a discussion, the discussion-only period proposal that went for a trial to refine the requests for adminship (RfA) process has been discontinued.
• Following a request for comment, Administrator recall is adopted as a policy.

Technical news

• Mass deletions done with the Nuke tool now have the 'Nuke' tag. This change will make reviewing and analyzing deletions performed with the tool easier. T366068

Arbitration

• RoySmith, Barkeep49 and Cyberpower678 have been appointed to the Electoral Commission for the 2024 Arbitration Committee Elections. ThadeusOfNazereth and Dr vulpes are reserve commissioners.
• Eligible editors are invited to self-nominate from 3 November 2024 until 12 November 2024 to stand in the 2024 Arbitration Committee elections.
• The Arbitration Committee is seeking volunteers for roles such as clerks, access to the COI queue, checkuser, and oversight.

Miscellaneous

• An unreferenced articles backlog drive is happening in November 2024 to reduce the backlog of articles tagged with {{Unreferenced}}. You can help reduce the backlog by adding citations to these articles. Sign up to participate!

@ComplexRational and Nucleus hydro elemon: JINR preprint (in Russian). See p. 7: it alpha decays with a lower half-life limit of 1 ms. :) Double sharp (talk) 08:04, 9 November 2024 (UTC)[reply]

Interesting :) Its predicted alpha half-life is 1.3 ms (doi:10.1016/j.physletb.2022.137569), which is consistent with the experimental half-life >1 ms. The prediction also predicts its double alpha half-life will be 537 ms.

Looking forward to the publication and additional discoveries. Also hoping that some of the missing or poorly-studied isotopes described in NUBASE2020 are the subject of future work. ^Complex/_Rational 01:57, 11 November 2024 (UTC)[reply]

By the way, ²²²Rn is also listed in the list of nuclides predicted with shortest double alpha half-lives. With a predicted half-life of 3 years, this decay mode is observable. Unfortunately, I'm not sure is there a way to separate ²²²Rn→²¹⁸Po→²¹⁴Pb and direct ²²²Rn→²¹⁴Pb. Nucleus hydro elemon (talk) 11:15, 9 November 2024 (UTC)[reply]

If I'm understanding correctly, there should be a measurable time delay if ²¹⁸Po is produced as an intermediate product, whereas double alpha decay would feature both alphas emitted simultaneously. I haven't read many articles about this, but I'd instead think it would be harder to distinguish double alpha decay from ⁸Be cluster emission. ^Complex/_Rational 01:57, 11 November 2024 (UTC)[reply]

According to the predictions, double alpha decays (if we have method to distinguish them from two separate alpha decays) of ¹⁴⁸Sm and ¹⁵²Gd are clearly observable! (Perhaps also ¹⁵⁰Gd and ¹⁵⁴Dy, if these two nuclides are available). 129.104.241.5 (talk) 23:12, 13 November 2024 (UTC)[reply]

November 22: Free Culture Friday
You are invited to Foundation and Friends' Free Culture Friday at Prime Produce on Friday, November 22. This event will feature a reception with Wikimedia Foundation staff in the afternoon, followed by a more informal salon and game night, utilizing Prime Produce's vast collection of board games. No experience of anything at all is required. All are welcome! Friday, November 22, 2024 1:30 pm – 7:00 pm Prime Produce, 424 W 54th St
November 26: Wikicurious: Capturing the Moment
You are also invited to Wikicurious: Capturing the Moment, the third event of the beginner-focused Wikicurious series, at Jefferson Market Library on Tuesday, November 26, in collaboration with WikiPortraits and AfroCROWD. All are welcome to attend, especially those interested in photography or contributing to Wikimedia Commons. We will explore the art of capturing the moment through photography and learn the basics of Wikimedia Commons, and (weather-permitting) we are also planning a photo walk, so bring your camera (or use your smartphone)! Tuesday, November 26, 2024 3:00 pm – 8:00 pm Jefferson Market Library, 425 6th Ave RSVP on Eventbrite is required for event entry!
All attendees at Wikimedia NYC events are subject to the Wikimedia NYC Code of Conduct.

(You can subscribe/unsubscribe from future notifications for NYC-area events by adding or removing your name from this list.)

--Wikimedia New York City Team via MediaWiki message delivery (talk) 15:32, 11 November 2024 (UTC)[reply]

Hello,

I recently invited you to take a survey about administration on Wikipedia. If you haven’t yet had a chance, there is still time to participate– we’d truly appreciate your feedback. The survey is anonymous and should take about 10-15 minutes to complete. You may read more about the study on its Meta page and view its privacy statement.

Take the survey here.

Kind Regards,

WMF Research Team

BGerdemann (WMF) (talk) 00:18, 13 November 2024 (UTC) [reply]

https://en.m.wikipedia.org/w/index.php?title=User:Infotalks23&redlink=1

https://en.m.wikipedia.org/w/index.php?title=User:Genuine_10&redlink=1

https://en.m.wikipedia.org/wiki/User:Bobanfasil

https://en.m.wikipedia.org/wiki/South_Indian_Derby#

2 socks of blocked user "fasil" showed up... last link has personal style and more updates or deletions by native speakers welcome. Cenderabird (talk) 13:54, 16 November 2024 (UTC)[reply]

@Cenderabird: It's not clear to me what you're asking. If this is a content-related issue, I encourage you to fix it yourself or discuss it on the article's talk page, and if you suspect a person is inappropriately using multiple accounts, please open a sockpuppet investigation. Thanks, ^Complex/_Rational 03:47, 17 November 2024 (UTC)[reply]

At Wikipedia:Redirects for discussion/Log/2024 November 3#1996 in California I accidentally skipped over 1998 in California in the list, so it didn't get deleted with the others. Can you delete plz. HertzDonuts (talk) 21:08, 17 November 2024 (UTC)[reply]

@HertzDonuts: Deleted, as I saw that you had tagged it along with the others, and it had the same trivial history. ^Complex/_Rational 22:50, 17 November 2024 (UTC)[reply]

Hello! Voting in the 2024 Arbitration Committee elections is now open until 23:59 (UTC) on Monday, 2 December 2024. All eligible users are allowed to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

If you wish to participate in the 2024 election, please review the candidates and submit your choices on the voting page. If you no longer wish to receive these messages, you may add {{NoACEMM}} to your user talk page. MediaWiki message delivery (talk) 00:40, 19 November 2024 (UTC)[reply]